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Conserved domains on  [gi|528749179|gb|AGS43730|]
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cytochrome oxidase subunit I, partial (mitochondrion) [Poecilimon ledereri]

Protein Classification

cytochrome-c oxidase subunit 1( domain architecture ID 10009591)

cytochrome-c oxidase subunit 1 is the catalytic subunit of cytochrome c oxidase, which is the component of the respiratory chain that catalyzes the reduction of oxygen to water

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


:

Pssm-ID: 177210  Cd Length: 511  Bit Score: 787.91  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00153 116 VESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGMTLDRMPLFVWSVLITAILLLL 195
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00153 196 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKETFGTLGMIYAM 275
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00153 276 LAIGLLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGSQINYSPSLLWALGFVFLFTIGGLTGVV 355
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00153 356 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMGGFIHWFPLFTGLTMNPKWLKIQFFIMFIGVNLTFFPQHFLGLAGMP 435
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPPA 395
Cdd:MTH00153 436 RRYSDYPDAYTSWNVISSIGSTISLISILFFIFIIWESMISKRPVLFSLNLSSSIEWLQNLPPA 499
 
Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 787.91  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00153 116 VESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGMTLDRMPLFVWSVLITAILLLL 195
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00153 196 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKETFGTLGMIYAM 275
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00153 276 LAIGLLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGSQINYSPSLLWALGFVFLFTIGGLTGVV 355
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00153 356 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMGGFIHWFPLFTGLTMNPKWLKIQFFIMFIGVNLTFFPQHFLGLAGMP 435
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPPA 395
Cdd:MTH00153 436 RRYSDYPDAYTSWNVISSIGSTISLISILFFIFIIWESMISKRPVLFSLNLSSSIEWLQNLPPA 499
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
12-388 0e+00

Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the respiratory chains of eukaryotes and most bacteria, is a multi-chain transmembrane protein located in the inner membrane of mitochondria and the cell membrane of prokaryotes. It catalyzes the reduction of O2 and simultaneously pumps protons across the membrane. The number of subunits varies from three to five in bacteria and up to 13 in mammalian mitochondria. Only subunits I and II are essential for function, but subunit III, which is also conserved, may play a role in assembly or oxygen delivery to the active site. Subunits I, II, and III of mammalian CcO are encoded within the mitochondrial genome and the remaining 10 subunits are encoded within the nuclear genome. Subunit I contains a heme-copper binuclear center (the active site where O2 is reduced to water) formed by a high-spin heme (heme a3) and a copper ion (CuB). It also contains a low-spin heme (heme a), believed to participate in the transfer of electrons to the binuclear center. For every reduction of an O2 molecule, eight protons are taken from the inside aqueous compartment and four electrons are taken from cytochrome c on the opposite side of the membrane. The four electrons and four of the protons are used in the reduction of O2; the four remaining protons are pumped across the membrane. This charge separation of four charges contributes to the electrochemical gradient used for ATP synthesis. Two proton channels, the D-pathway and K-pathway, leading to the binuclear center have been identified in subunit I. A well-defined pathway for the transfer of pumped protons beyond the binuclear center has not been identified. Electrons are transferred from cytochrome c (the electron donor) to heme a via the CuA binuclear site in subunit II, and directly from heme a to the binuclear center.


Pssm-ID: 238833  Cd Length: 488  Bit Score: 676.89  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:cd01663  109 VEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLL 188
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:cd01663  189 SLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGIISHIISTFSGKKPVFGYLGMVYAM 268
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:cd01663  269 LSIGILGFIVWAHHMFTVGLDVDTRAYFTAATMIIAVPTGIKVFSWLATMWGGSIKFETPMLWALGFIFLFTIGGLTGVV 348
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:cd01663  349 LANSSLDIALHDTYYVVAHFHYVLSMGAVFAIFAGFYYWFPKITGLSYNETLGKIHFWLMFIGVNLTFFPQHFLGLAGMP 428
                        330       340       350       360       370
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLF-PLSMTSSLEW 388
Cdd:cd01663  429 RRYPDYPDAYAGWNMISSIGSLISFVSVLLFLFIVWESFVSGRKVIFnVGEGSTSLEW 486
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
15-356 2.29e-151

Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];


Pssm-ID: 440605  Cd Length: 535  Bit Score: 438.41  E-value: 2.29e-151
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  15 GAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLLSLP 94
Cdd:COG0843  123 AADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRAPGMTLMRMPLFTWAALVTSILILLAFP 202
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  95 VLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAMLAI 174
Cdd:COG0843  203 VLAAALLLLLLDRSLGTHFFDPAGGGDPLLWQHLFWFFGHPEVYILILPAFGIVSEIIPTFSRKP-LFGYKAMVLATVAI 281
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 175 GLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVVLAN 254
Cdd:COG0843  282 AFLSFLVWAHHMFTPGISPLVKAFFSIATMLIAVPTGVKVFNWIATMWRGRIRFTTPMLFALGFIILFVIGGLTGVMLAS 361
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 255 SSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRRY 334
Cdd:COG0843  362 VPLDYQVHDTYFVVAHFHYVLIGGVVFAFFAGLYYWFPKMTGRMLNERLGKIHFWLWFIGFNLTFFPMHILGLLGMPRRY 441
                        330       340
                 ....*....|....*....|....
gi 528749179 335 SDYP--DVYTSWNVLSSIGSTISF 356
Cdd:COG0843  442 ATYPpePGWQPLNLISTIGAFILA 465
CtaD_CoxA TIGR02891
cytochrome c oxidase, subunit I; This large family represents subunit I's (CtaD, CoxA, CaaA) ...
15-394 1.17e-149

cytochrome c oxidase, subunit I; This large family represents subunit I's (CtaD, CoxA, CaaA) of cytochrome c oxidases of bacterial origin. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits I-III form the functional core of the enzyme complex. Subunit I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit II and heme a of subunit I to the bimetallic center formed by heme a3 and copper B. This cytochrome c oxidase shows proton pump activity across the membrane in addition to the electron transfer. In the bacilli an apparent split (paralogism) has created a sister clade (TIGR02882) encoding subunits (QoxA) of the aa3-type quinone oxidase complex which reacts directly with quinones, bypassing the interaction with soluble cytochrome c. This model attempts to exclude these sequences, placing them between the trusted and noise cutoffs. These families, as well as archaeal and eukaryotic cytochrome c subunit I's are included within the superfamily model, pfam00115. [Energy metabolism, Electron transport]


Pssm-ID: 213748  Cd Length: 499  Bit Score: 432.80  E-value: 1.17e-149
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   15 GAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLLSLP 94
Cdd:TIGR02891 114 APDTGWTMYPPLSSTSGSPGVGVDLWLLGLHLLGISSILGAVNFIVTILNMRAPGMTLMRMPLFVWGILVTSILILLAFP 193
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   95 VLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAMLAI 174
Cdd:TIGR02891 194 VLIAALILLLLDRLFGTHFFDPARGGDPLLWQHLFWFFGHPEVYIIFLPAFGIISEILPTFARKP-IFGYRAMVYATVAI 272
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  175 GLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVVLAN 254
Cdd:TIGR02891 273 GFLSFGVWAHHMFTTGMPPLALAFFSAATMLIAVPTGVKVFNWIATLWGGSIRFTTPMLFALGFIFLFVIGGLTGVMLAS 352
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  255 SSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRRY 334
Cdd:TIGR02891 353 VPLDWQLHDTYFVVAHFHYVLVGGSVFAIFAAIYYWFPKVTGRMYNERLGRWHFWLTFVGFNLTFFPMHLLGLLGMPRRY 432
                         330       340       350       360       370       380
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 528749179  335 SDYPD--VYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:TIGR02891 433 YTYPPqmGFATLNLISTIGAFILAAGFLVFLWNLIWSLRKGPKAGANPWGATTLEWTTSSPP 494
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
14-354 1.89e-103

Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key enzyme in aerobic metabolism. Proton pumping haem-copper oxidases represent the terminal, energy-transfer enzymes of respiratory chains in prokaryotes and eukaryotes. The CuB-haem a3 (or haem o) binuclear centre, associated with the largest subunit I of cytochrome c and ubiquinol oxidases (E.C:1.10.3.11), is directly involved in the coupling between dioxygen reduction and proton pumping. Some terminal oxidases generate a transmembrane proton gradient across the plasma membrane (prokaryotes) or the mitochondrial inner membrane (eukaryotes). The enzyme complex consists of 3-4 subunits (prokaryotes) up to 13 polypeptides (mammals) of which only the catalytic subunit (equivalent to mammalian subunit I (COXI) is found in all haem-copper respiratory oxidases. The presence of a bimetallic centre (formed by a high-spin haem and copper B) as well as a low-spin haem, both ligated to six conserved histidine residues near the outer side of four transmembrane spans within CO I is common to all family members.


Pssm-ID: 459678  Cd Length: 432  Bit Score: 312.58  E-value: 1.89e-103
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   14 NGAGTGWTVYPPLSAgiahggasVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLdQTPLFVWSVAITALLLLLSL 93
Cdd:pfam00115 103 GGATTGWTEYPPLVG--------VDLWYIGLLLAGVSSLLGAINFIVTILKRRAPGMTL-RMPLFVWAILATAILILLAF 173
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   94 PVLAGAITMLLTDRNLNtsffdpAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAMLA 173
Cdd:pfam00115 174 PVLAAALLLLLLDRSLG------AGGGDPLLDQHLFWWFGHPEVYILILPAFGIIYYILPKFAGRP-LFGYKLSVLAFWL 246
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  174 IGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLT-YSPALLWALGFVFLFTIGGLTGVVL 252
Cdd:pfam00115 247 IAFLGFLVWAHHLFTTGLPPWLQALFSVFSMLIAVPSGVKVFNWLATLWGGWIRfRTTPMLFFLGFAFLFIIGGLTGVML 326
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  253 ANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPR 332
Cdd:pfam00115 327 ALPPVNYYVHDTYFVVAHFHYVLFGGVVFALFGGIYYWLPKLTGRMYSEKLGKLHFWLLFIGFNLTFFPMHILGLLGMPR 406
                         330       340
                  ....*....|....*....|....*.
gi 528749179  333 RYS----DYPDVYTSWNVLSSIGSTI 354
Cdd:pfam00115 407 RYAppfiETVPAFQPLNWIRTIGGVL 432
 
Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 787.91  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00153 116 VESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGMTLDRMPLFVWSVLITAILLLL 195
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00153 196 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKETFGTLGMIYAM 275
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00153 276 LAIGLLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGSQINYSPSLLWALGFVFLFTIGGLTGVV 355
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00153 356 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMGGFIHWFPLFTGLTMNPKWLKIQFFIMFIGVNLTFFPQHFLGLAGMP 435
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPPA 395
Cdd:MTH00153 436 RRYSDYPDAYTSWNVISSIGSTISLISILFFIFIIWESMISKRPVLFSLNLSSSIEWLQNLPPA 499
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
12-388 0e+00

Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the respiratory chains of eukaryotes and most bacteria, is a multi-chain transmembrane protein located in the inner membrane of mitochondria and the cell membrane of prokaryotes. It catalyzes the reduction of O2 and simultaneously pumps protons across the membrane. The number of subunits varies from three to five in bacteria and up to 13 in mammalian mitochondria. Only subunits I and II are essential for function, but subunit III, which is also conserved, may play a role in assembly or oxygen delivery to the active site. Subunits I, II, and III of mammalian CcO are encoded within the mitochondrial genome and the remaining 10 subunits are encoded within the nuclear genome. Subunit I contains a heme-copper binuclear center (the active site where O2 is reduced to water) formed by a high-spin heme (heme a3) and a copper ion (CuB). It also contains a low-spin heme (heme a), believed to participate in the transfer of electrons to the binuclear center. For every reduction of an O2 molecule, eight protons are taken from the inside aqueous compartment and four electrons are taken from cytochrome c on the opposite side of the membrane. The four electrons and four of the protons are used in the reduction of O2; the four remaining protons are pumped across the membrane. This charge separation of four charges contributes to the electrochemical gradient used for ATP synthesis. Two proton channels, the D-pathway and K-pathway, leading to the binuclear center have been identified in subunit I. A well-defined pathway for the transfer of pumped protons beyond the binuclear center has not been identified. Electrons are transferred from cytochrome c (the electron donor) to heme a via the CuA binuclear site in subunit II, and directly from heme a to the binuclear center.


Pssm-ID: 238833  Cd Length: 488  Bit Score: 676.89  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:cd01663  109 VEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLL 188
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:cd01663  189 SLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGIISHIISTFSGKKPVFGYLGMVYAM 268
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:cd01663  269 LSIGILGFIVWAHHMFTVGLDVDTRAYFTAATMIIAVPTGIKVFSWLATMWGGSIKFETPMLWALGFIFLFTIGGLTGVV 348
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:cd01663  349 LANSSLDIALHDTYYVVAHFHYVLSMGAVFAIFAGFYYWFPKITGLSYNETLGKIHFWLMFIGVNLTFFPQHFLGLAGMP 428
                        330       340       350       360       370
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLF-PLSMTSSLEW 388
Cdd:cd01663  429 RRYPDYPDAYAGWNMISSIGSLISFVSVLLFLFIVWESFVSGRKVIFnVGEGSTSLEW 486
COX1 MTH00142
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214431  Cd Length: 511  Bit Score: 641.00  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00142 116 VESGAGTGWTVYPPLSSNLAHSGGSVDLAIFSLHLAGVSSILGAINFITTVINMRAGGMKFERVPLFVWSVKITAILLLL 195
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00142 196 SLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIINHYSGKKEVFGTLGMIYAM 275
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00142 276 LSIGLLGFIVWAHHMFTVGMDVDTRAYFTAATMVIAVPTGIKVFSWLATLHGSKVKYEPPMLWALGFIFLFTVGGLTGIV 355
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00142 356 LANSSLDVVLHDTYYVVAHFHYVLSMGAVFALFAGFIHWFPLFTGLTLNPRWLKAHFYTMFIGVNLTFFPQHFLGLAGMP 435
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPPA 395
Cdd:MTH00142 436 RRYSDYPDAYTTWNVVSSLGSMISFIAVLMFVFIVWESFVSQRLVMWSSHLSTSLEWSHRLPPD 499
COX1 MTH00167
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177222  Cd Length: 512  Bit Score: 638.65  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00167 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGSINFITTIINMKPPGITQYQTPLFVWSILVTTILLLL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00167 198 SLPVLAAAITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIVVYYSGKKEPFGYMGMVWAM 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00167 278 MAIGLLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKVFSWLATLHGGKIKWETPMLWALGFIFLFTVGGLTGIV 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00167 358 LANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIMAGFTHWFPLFTGLTLNETWTKIHFFVMFIGVNLTFFPQHFLGLAGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPPA 395
Cdd:MTH00167 438 RRYSDYPDAYTLWNVVSSIGSLISLVAVILFLFIIWEAFSSKRKLLPVELTSTNVEWLHGCPPP 501
COX1 MTH00223
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177260  Cd Length: 512  Bit Score: 638.18  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00223 115 VESGVGTGWTVYPPLSSNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTIINMRSPGMQLERLPLFVWSVKVTAFLLLL 194
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00223 195 SLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIVSHYSSKKEVFGTLGMIYAM 274
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00223 275 LSIGVLGFIVWAHHMFTVGMDVDTRAYFTAATMIIAVPTGIKVFSWLATIYGSKIKYEAPMLWALGFIFLFTVGGLTGII 354
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00223 355 LSNSSLDIMLHDTYYVVAHFHYVLSMGAVFALFAGFNHWFPLFTGVTLHRRWAKAHFFLMFLGVNLTFFPQHFLGLAGMP 434
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPPA 395
Cdd:MTH00223 435 RRYSDYPDCYTKWNQVSSFGSMISFVSVLFFMFIVWEAFVSQRSVVWSGHLSTSLEWDNLLPAD 498
COX1 MTH00116
cytochrome c oxidase subunit I; Provisional
12-394 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177177  Cd Length: 515  Bit Score: 637.13  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00116 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGAINFITTCINMKPPAMSQYQTPLFVWSVLITAVLLLL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00116 198 SLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGIISHIVTYYAGKKEPFGYMGMVWAM 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00116 278 LSIGFLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAIPTGIKVFSWLATLHGGTIKWDPPMLWALGFIFLFTIGGLTGIV 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00116 358 LANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIMAGFTHWFPLFTGYTLHQTWTKAQFGVMFTGVNLTFFPQHFLGLAGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:MTH00116 438 RRYSDYPDAYTLWNTISSIGSLISMTAVIMLMFIIWEAFSSKRKVLQPELTTTNIEWIHGCPP 500
COX1 MTH00037
cytochrome c oxidase subunit I; Provisional
12-395 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177112  Cd Length: 517  Bit Score: 574.08  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00037 118 VESGAGTGWTIYPPLSSNIAHAGGSVDLAIFSLHLAGASSILASINFITTIINMRTPGMTFDRLPLFVWSVFITAFLLLL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00037 198 SLPVLAGAITMLLTDRNINTTFFDPAGGGDPILFQHLFWFFGHPEVYILILPGFGMISHVIAHYSGKQEPFGYLGMVYAM 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00037 278 IAIGILGFLVWAHHMFTVGMDVDTRAYFTAATMIIAVPTGIKVFSWMATLQGSNLRWETPLLWALGFVFLFTIGGLTGIV 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00037 358 LANSSIDVVLHDTYYVVAHFHYVLSMGAVFAIFAGFTHWFPLFSGVSLHPLWSKVHFFLMFIGVNLTFFPQHFLGLAGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEW-YQNLPPA 395
Cdd:MTH00037 438 RRYSDYPDAYTLWNTVSSIGSTISLVATLFFLFLIWEAFASQREVISPEFSSSSLEWqYSSFPPS 502
COX1 MTH00103
cytochrome c oxidase subunit I; Validated
12-394 0e+00

cytochrome c oxidase subunit I; Validated


Pssm-ID: 177165  Cd Length: 513  Bit Score: 568.36  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00103 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAMSQYQTPLFVWSVLITAVLLLL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00103 198 SLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIVTYYSGKKEPFGYMGMVWAM 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00103 278 MSIGFLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAIPTGVKVFSWLATLHGGNIKWSPAMLWALGFIFLFTVGGLTGIV 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00103 358 LANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIMGGFVHWFPLFSGYTLNDTWAKIHFTIMFVGVNMTFFPQHFLGLSGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:MTH00103 438 RRYSDYPDAYTTWNTVSSMGSFISLTAVMLMIFMIWEAFASKREVLTVELTTTNLEWLHGCPP 500
COX1 MTH00007
cytochrome c oxidase subunit I; Validated
12-393 0e+00

cytochrome c oxidase subunit I; Validated


Pssm-ID: 133649  Cd Length: 511  Bit Score: 560.67  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00007 115 VEKGVGTGWTVYPPLASNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTVINMRWKGLRLERIPLFVWAVVITVVLLLL 194
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00007 195 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGAISHIVTHYAGKLEPFGTLGMIYAM 274
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00007 275 LGIGVLGFIVWAHHMFTVGMDVDTRAYFTAATMIIAVPTGIKVFSWLATIHGSPIKYETPMLWALGFIFLFTTGGLTGIV 354
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00007 355 LSNSSLDIILHDTYYVVAHFHYVLSMGAVFAIFAAFNHWFPLFTGLTLHDRWAKAHFFLMFLGVNLTFFPQHFLGLSGMP 434
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLP 393
Cdd:MTH00007 435 RRYSDYPDAYTKWNVVSSFGSMLSFVALLLFIFILWEAFSAQRGVIASPHMSSSLEWQDTLP 496
COX1 MTH00183
cytochrome c oxidase subunit I; Provisional
12-394 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177234  Cd Length: 516  Bit Score: 559.93  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00183 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAISQYQTPLFVWAVLITAVLLLL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00183 198 SLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIVAYYSGKKEPFGYMGMVWAM 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00183 278 MAIGLLGFIVWAHHMFTVGMDVDTRAYFTSATMIIAIPTGVKVFSWLATLHGGSIKWETPLLWALGFIFLFTVGGLTGIV 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00183 358 LANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIMAAFVHWFPLFSGYTLHSTWTKIHFGVMFVGVNLTFFPQHFLGLAGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:MTH00183 438 RRYSDYPDAYTLWNTVSSIGSLISLVAVIMFLFILWEAFAAKREVLSVELTSTNVEWLHGCPP 500
COX1 MTH00077
cytochrome c oxidase subunit I; Provisional
12-394 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214419  Cd Length: 514  Bit Score: 552.24  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00077 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTSINMKPPSMSQYQTPLFVWSVLITAVLLLL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00077 198 SLPVLAAGITMLLTDRNLNTTFFDPAGGGDPVLYQHLFWFFGHPEVYILILPGFGMISHIVTYYSAKKEPFGYMGMVWAM 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00077 278 MSIGLLGFIVWAHHMFTVDLNVDTRAYFTSATMIIAIPTGVKVFSWLATMHGGAIKWDAAMLWALGFIFLFTVGGLTGIV 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00077 358 LANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIMGGFVHWFPLFSGYTLHSTWSKIHFGVMFIGVNLTFFPQHFLGLAGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:MTH00077 438 RRYSDYPDAYTLWNTVSSIGSLISLVAVIMMMFIIWEAFSSKREVLTTELTSTNIEWLHGCPP 500
COX1 MTH00079
cytochrome c oxidase subunit I; Provisional
12-394 0e+00

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177148  Cd Length: 508  Bit Score: 526.17  E-value: 0e+00
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAgIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00079 119 VDMGPGTSWTVYPPLST-LGHPGSSVDLAIFSLHCAGISSILGGINFMVTTKNLRSSSISLEHMSLFVWTVFVTVFLLVL 197
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00079 198 SLPVLAGAITMLLTDRNLNTSFFDPSTGGNPLLYQHLFWFFGHPEVYILILPAFGIISQSTLYLTGKKEVFGSLGMVYAI 277
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00079 278 LSIGLIGCVVWAHHMYTVGMDLDSRAYFTAATMVIAVPTGVKVFSWLATLFGMKMKFQPLLLWVLGFIFLFTIGGLTGVI 357
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00079 358 LSNSSLDIILHDTYYVVSHFHYVLSLGAVFGIFTGISLWWPFMTGIVYDKLMMSAVFFLMFVGVNLTFFPLHFAGLHGMP 437
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:MTH00079 438 RKYLDYPDVYSVWNVISSYGSMISVFALFLFIYVLLESFFSYRLVLHDNYINSSPEYSLSSYV 500
COX1 MTH00182
cytochrome c oxidase subunit I; Provisional
12-395 2.55e-179

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214451  Cd Length: 525  Bit Score: 509.36  E-value: 2.55e-179
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00182 120 VEQGAGTGWTVYPPLSSIQAHSGGAVDMAIFSLHLAGVSSILGAINFITTIFNMRAPGVTFNRLPLFVWSILITAFLLLL 199
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00182 200 SLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILFQHLFWFFGHPEVYILILPGFGMISQIIPTFVAKKQIFGYLGMVYAM 279
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00182 280 LSIGILGFIVWAHHMFTVGMDVDTRAYFTAATMIIAVPTGIKVFSWLATIYGGTLRLDTPMLWAMGFVFLFTLGGLTGVV 359
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00182 360 LANSSLDIVLHDTYYVVAHFHYVLSMGAVFAIFGGFYYWFGKITGYCYNELYGKIHFWLMFIGVNLTFFPQHFLGLAGFP 439
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVL----FPLSMTSSLEWYQNLPPA 395
Cdd:MTH00182 440 RRYSDFADAFAGWNLVSSLGSIISIVGVVWFIYIIYDAYVREEKFIgwkeGTGESWASLEWVHSSPPL 507
COX1 MTH00184
cytochrome c oxidase subunit I; Provisional
12-395 1.96e-175

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177235  Cd Length: 519  Bit Score: 498.97  E-value: 1.96e-175
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00184 120 VEQGAGTGWTVYPPLSSIQAHSGGSVDMAIFSLHLAGISSILGAMNFITTIFNMRAPGITMDRMPLFVWSILVTTFLLLL 199
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00184 200 SLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGIISQIIPTFAAKKQIFGYLGMVYAM 279
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:MTH00184 280 VSIGILGFIVWAHHMFTVGMDVDTRAYFTAATMIIAVPTGIKIFSWIATIFGGSLRLDTPMLWAIGFVFLFTMGGLTGIV 359
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:MTH00184 360 LANSSLDVVLHDTYYVVAHFHYVLSMGAVFAIFGGFYYWFGKITGYCYNEVYGKIHFWLMFIGVNLTFFPQHFLGLAGLP 439
                        330       340       350       360       370       380
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMIsnRTVLF-----PLSMTSSLEWYQNLPPA 395
Cdd:MTH00184 440 RRYSDFHDSFAGWNQISSLGSVISIVGVVWFIYIVYDAYV--REIKFvgwveDSGHYPSLEWAQTSPPA 506
Heme_Cu_Oxidase_I cd00919
Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in ...
12-370 3.99e-164

Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in the respiratory chains of prokaryotes and mitochondria which catalyze the reduction of O2 and simultaneously pump protons across the membrane. The superfamily is diverse in terms of electron donors, subunit composition, and heme types. The number of subunits varies from three to five in bacteria and up to 13 in mammalian mitochondria. It has been proposed that Archaea acquired heme-copper oxidases through gene transfer from Gram-positive bacteria. Membership in the superfamily is defined by subunit I, which contains a heme-copper binuclear center (the active site where O2 is reduced to water) formed by a high-spin heme and a copper ion. It also contains a low-spin heme, believed to participate in the transfer of electrons to the binuclear center. Only subunit I is common to the entire superfamily. For every reduction of an O2 molecule, eight protons are taken from the inside aqueous compartment and four electrons are taken from the electron donor on the opposite side of the membrane. The four electrons and four of the protons are used in the reduction of O2; the four remaining protons are pumped across the membrane. This charge separation of four charges contributes to the electrochemical gradient used for ATP synthesis. Two proton channels, the D-pathway and K-pathway, leading to the binuclear center have been identified in subunit I of cytochrome c oxidase (CcO) and ubiquinol oxidase. A well-defined pathway for the transfer of pumped protons beyond the binuclear center has not been identified. Electron transfer occurs in two segments: from the electron donor to the low-spin heme, and from the low-spin heme to the binuclear center. The first segment can be a multi-step process and varies among the different families, while the second segment, a direct transfer, is consistent throughout the superfamily.


Pssm-ID: 238461  Cd Length: 463  Bit Score: 468.16  E-value: 3.99e-164
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:cd00919  106 VGGGAGTGWTFYPPLSTLSYSSGVGVDLAILGLHLAGVSSILGAINFITTILNMRAPGMTLDKMPLFVWSVLVTAILLLL 185
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAM 171
Cdd:cd00919  186 ALPVLAAALVMLLLDRNFGTSFFDPAGGGDPVLYQHLFWFFGHPEVYILILPAFGAISEIIPTFSGKP-LFGYKLMVYAF 264
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:cd00919  265 LAIGFLSFLVWAHHMFTVGLPVDTRAYFTAATMIIAVPTGIKVFNWLATLWGGRIRFDPPMLFALGFLFLFTIGGLTGVV 344
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:cd00919  345 LANVPLDIVLHDTYYVVAHFHYVLSGGVVFAIFAGLYYWFPKMTGRMLSEKLGKIHFWLWFIGFNLTFFPMHFLGLLGMP 424
                        330       340       350
                 ....*....|....*....|....*....|....*....
gi 528749179 332 RRYSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESM 370
Cdd:cd00919  425 RRYADYPDGFAPWNFISSVGAFILGLGLLLFLGNLFLSL 463
COX1 MTH00026
cytochrome c oxidase subunit I; Provisional
12-355 1.10e-153

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 164599  Cd Length: 534  Bit Score: 444.46  E-value: 1.10e-153
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:MTH00026 119 VEQGAGTGWTVYPPLASIQAHSGGSVDMAIFSLHLAGLSSILGAMNFITTVMNMRTPGMTMSRIPLFVWSVFITAILLLL 198
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAM 171
Cdd:MTH00026 199 SLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGIISQILSLFSYKKQIFGYLGMVYAM 278
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGT--QLTYSPALLWALGFVFLFTIGGLTG 249
Cdd:MTH00026 279 LAIGVLGFIVWAHHMYVVGMDVDTRAYFTAATMIIAVPTGIKIFSWLATVSGSgrNLIFTTPMAWALGFIFLFTIGGLTG 358
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 250 VVLANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAG 329
Cdd:MTH00026 359 IVLSNSSLDILLHDTYYVVAHFHFVLSMGAVFAIFGGFYLWFGKITGYAYKDIYGLIHFWLMFIGVNITFFPQHFLGLAG 438
                        330       340
                 ....*....|....*....|....*.
gi 528749179 330 MPRRYSDYPDVYTSWNVLSSIGSTIS 355
Cdd:MTH00026 439 LPRRYADYPDNFEDFNQISSFGSIIS 464
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
15-356 2.29e-151

Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];


Pssm-ID: 440605  Cd Length: 535  Bit Score: 438.41  E-value: 2.29e-151
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  15 GAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLLSLP 94
Cdd:COG0843  123 AADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRAPGMTLMRMPLFTWAALVTSILILLAFP 202
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  95 VLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAMLAI 174
Cdd:COG0843  203 VLAAALLLLLLDRSLGTHFFDPAGGGDPLLWQHLFWFFGHPEVYILILPAFGIVSEIIPTFSRKP-LFGYKAMVLATVAI 281
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 175 GLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVVLAN 254
Cdd:COG0843  282 AFLSFLVWAHHMFTPGISPLVKAFFSIATMLIAVPTGVKVFNWIATMWRGRIRFTTPMLFALGFIILFVIGGLTGVMLAS 361
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 255 SSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRRY 334
Cdd:COG0843  362 VPLDYQVHDTYFVVAHFHYVLIGGVVFAFFAGLYYWFPKMTGRMLNERLGKIHFWLWFIGFNLTFFPMHILGLLGMPRRY 441
                        330       340
                 ....*....|....*....|....
gi 528749179 335 SDYP--DVYTSWNVLSSIGSTISF 356
Cdd:COG0843  442 ATYPpePGWQPLNLISTIGAFILA 465
CtaD_CoxA TIGR02891
cytochrome c oxidase, subunit I; This large family represents subunit I's (CtaD, CoxA, CaaA) ...
15-394 1.17e-149

cytochrome c oxidase, subunit I; This large family represents subunit I's (CtaD, CoxA, CaaA) of cytochrome c oxidases of bacterial origin. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Subunits I-III form the functional core of the enzyme complex. Subunit I is the catalytic subunit of the enzyme. Electrons originating in cytochrome c are transferred via the copper A center of subunit II and heme a of subunit I to the bimetallic center formed by heme a3 and copper B. This cytochrome c oxidase shows proton pump activity across the membrane in addition to the electron transfer. In the bacilli an apparent split (paralogism) has created a sister clade (TIGR02882) encoding subunits (QoxA) of the aa3-type quinone oxidase complex which reacts directly with quinones, bypassing the interaction with soluble cytochrome c. This model attempts to exclude these sequences, placing them between the trusted and noise cutoffs. These families, as well as archaeal and eukaryotic cytochrome c subunit I's are included within the superfamily model, pfam00115. [Energy metabolism, Electron transport]


Pssm-ID: 213748  Cd Length: 499  Bit Score: 432.80  E-value: 1.17e-149
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   15 GAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLLSLP 94
Cdd:TIGR02891 114 APDTGWTMYPPLSSTSGSPGVGVDLWLLGLHLLGISSILGAVNFIVTILNMRAPGMTLMRMPLFVWGILVTSILILLAFP 193
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   95 VLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAMLAI 174
Cdd:TIGR02891 194 VLIAALILLLLDRLFGTHFFDPARGGDPLLWQHLFWFFGHPEVYIIFLPAFGIISEILPTFARKP-IFGYRAMVYATVAI 272
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  175 GLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVVLAN 254
Cdd:TIGR02891 273 GFLSFGVWAHHMFTTGMPPLALAFFSAATMLIAVPTGVKVFNWIATLWGGSIRFTTPMLFALGFIFLFVIGGLTGVMLAS 352
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  255 SSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRRY 334
Cdd:TIGR02891 353 VPLDWQLHDTYFVVAHFHYVLVGGSVFAIFAAIYYWFPKVTGRMYNERLGRWHFWLTFVGFNLTFFPMHLLGLLGMPRRY 432
                         330       340       350       360       370       380
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 528749179  335 SDYPD--VYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVLFPLSMTSSLEWYQNLPP 394
Cdd:TIGR02891 433 YTYPPqmGFATLNLISTIGAFILAAGFLVFLWNLIWSLRKGPKAGANPWGATTLEWTTSSPP 494
COX1 MTH00048
cytochrome c oxidase subunit I; Provisional
15-377 2.83e-137

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177123  Cd Length: 511  Bit Score: 401.75  E-value: 2.83e-137
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  15 GAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLdQTPLFVWSVAITALLLLLSLP 94
Cdd:MTH00048 120 GAGVGWTFYPPLSSSLFSSSWGVDFLMFSLHLAGVSSLFGSINFICTIYSAFMTNVFS-RTSIILWSYLFTSILLLLSLP 198
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  95 VLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIYAMLAI 174
Cdd:MTH00048 199 VLAAAITMLLFDRNFGSAFFDPLGGGDPVLFQHMFWFFGHPEVYVLILPGFGIISHICLSLSNNDDPFGYYGLVFAMFSI 278
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 175 GLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYS-PALLWALGFVFLFTIGGLTGVVLA 253
Cdd:MTH00048 279 VCLGSVVWAHHMFTVGLDVKTAVFFSSVTMIIGVPTGIKVFSWLYMLLNSRVRKSdPVVWWVVSFIVLFTIGGVTGIVLS 358
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 254 NSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRR 333
Cdd:MTH00048 359 ASVLDNVLHDTWFVVAHFHYVLSLGSYSSVVIMFIWWWPLITGLSLNKYLLQCHCIISMIGFNLCFFPMHYFGLCGLPRR 438
                        330       340       350       360
                 ....*....|....*....|....*....|....*....|....
gi 528749179 334 YSDYPDVYTSWNVLSSIGSTISFIGIIMLIFIIWESMISNRTVL 377
Cdd:MTH00048 439 VCVYEPSYYWINVVCTVGSFISAFSGCFFVFILWESLVVKNEVL 482
Ubiquinol_Oxidase_I cd01662
Ubiquinol oxidase subunit I. Ubiquinol oxidase, the terminal oxidase in the respiratory ...
12-354 6.29e-132

Ubiquinol oxidase subunit I. Ubiquinol oxidase, the terminal oxidase in the respiratory chains of aerobic bacteria, is a multi-chain transmembrane protein located in the cell membrane. It catalyzes the reduction of O2 and simultaneously pumps protons across the membrane. The number of subunits in ubiquinol oxidase varies from two to five. Subunit I contains a heme-copper binuclear center (the active site where O2 is reduced to water) formed by a high-spin heme and a copper ion. It also contains a low-spin heme, believed to participate in the transfer of electrons from ubiquinol to the binuclear center. For every reduction of an O2 molecule, eight protons are taken from the inside aqueous compartment and four electrons are taken from ubiquinol on the opposite side of the membrane. The four electrons and four of the protons are used in the reduction of O2; the four remaining protons are pumped across the membrane. This charge separation of four charges contributes to the electrochemical gradient used for ATP synthesis. Two proton channels, the D-pathway and K-pathway, leading to the binuclear center have been identified in subunit I. It is generally believed that the channels contain water molecules that act as 'proton wires' to transfer the protons. A well-defined pathway for the transfer of pumped protons beyond the binuclear center has not been identified. Electrons are believed to be transferred directly from ubiquinol (the electron donor) to the low-spin heme, and directly from the low-spin heme to the binuclear center.


Pssm-ID: 238832  Cd Length: 501  Bit Score: 387.71  E-value: 6.29e-132
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  12 VENGAGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLL 91
Cdd:cd01662  112 IGGFPDAGWFAYPPLSGLEYSPGVGVDYWILGLQFSGIGTLLGAINFIVTILKMRAPGMTLMRMPIFTWTTLVTSILILF 191
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  92 SLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAM 171
Cdd:cd01662  192 AFPVLTAALALLELDRYFGTHFFTNALGGNPMLWQHLFWIFGHPEVYILILPAFGIFSEIVPTFSRKP-LFGYRSMVYAT 270
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 172 LAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVV 251
Cdd:cd01662  271 VAIGFLSFGVWVHHMFTTGAGALVNAFFSIATMIIAVPTGVKIFNWLFTMWRGRIRFETPMLWAIGFLVTFVIGGLTGVM 350
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 252 LANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMP 331
Cdd:cd01662  351 LASPPADFQVHDTYFVVAHFHYVLIGGVVFPLFAGFYYWFPKMFGRMLNERLGKWSFWLWFIGFNLTFFPMHILGLMGMP 430
                        330       340
                 ....*....|....*....|....*
gi 528749179 332 RRYSDYPDV--YTSWNVLSSIGSTI 354
Cdd:cd01662  431 RRVYTYLPGpgWDPLNLISTIGAFL 455
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
14-354 1.89e-103

Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key enzyme in aerobic metabolism. Proton pumping haem-copper oxidases represent the terminal, energy-transfer enzymes of respiratory chains in prokaryotes and eukaryotes. The CuB-haem a3 (or haem o) binuclear centre, associated with the largest subunit I of cytochrome c and ubiquinol oxidases (E.C:1.10.3.11), is directly involved in the coupling between dioxygen reduction and proton pumping. Some terminal oxidases generate a transmembrane proton gradient across the plasma membrane (prokaryotes) or the mitochondrial inner membrane (eukaryotes). The enzyme complex consists of 3-4 subunits (prokaryotes) up to 13 polypeptides (mammals) of which only the catalytic subunit (equivalent to mammalian subunit I (COXI) is found in all haem-copper respiratory oxidases. The presence of a bimetallic centre (formed by a high-spin haem and copper B) as well as a low-spin haem, both ligated to six conserved histidine residues near the outer side of four transmembrane spans within CO I is common to all family members.


Pssm-ID: 459678  Cd Length: 432  Bit Score: 312.58  E-value: 1.89e-103
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   14 NGAGTGWTVYPPLSAgiahggasVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLdQTPLFVWSVAITALLLLLSL 93
Cdd:pfam00115 103 GGATTGWTEYPPLVG--------VDLWYIGLLLAGVSSLLGAINFIVTILKRRAPGMTL-RMPLFVWAILATAILILLAF 173
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   94 PVLAGAITMLLTDRNLNtsffdpAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKeAFGTLGMIYAMLA 173
Cdd:pfam00115 174 PVLAAALLLLLLDRSLG------AGGGDPLLDQHLFWWFGHPEVYILILPAFGIIYYILPKFAGRP-LFGYKLSVLAFWL 246
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  174 IGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLT-YSPALLWALGFVFLFTIGGLTGVVL 252
Cdd:pfam00115 247 IAFLGFLVWAHHLFTTGLPPWLQALFSVFSMLIAVPSGVKVFNWLATLWGGWIRfRTTPMLFFLGFAFLFIIGGLTGVML 326
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  253 ANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPR 332
Cdd:pfam00115 327 ALPPVNYYVHDTYFVVAHFHYVLFGGVVFALFGGIYYWLPKLTGRMYSEKLGKLHFWLLFIGFNLTFFPMHILGLLGMPR 406
                         330       340
                  ....*....|....*....|....*.
gi 528749179  333 RYS----DYPDVYTSWNVLSSIGSTI 354
Cdd:pfam00115 407 RYAppfiETVPAFQPLNWIRTIGGVL 432
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
19-354 1.22e-82

cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type quinone oxidase, one of several bacterial terminal oxidases. This complex couples oxidation of reduced quinones with the reduction of molecular oxygen to water and the pumping of protons to form a proton gradient utilized for ATP production. aa3-type oxidases contain two heme a cofactors as well as copper atoms in the active site. [Energy metabolism, Electron transport]


Pssm-ID: 131928  Cd Length: 643  Bit Score: 265.18  E-value: 1.22e-82
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   19 GWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLLSLPVLAG 98
Cdd:TIGR02882 162 GWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAPGMKLMQMPMFTWTTLITTLIIIFAFPVLTV 241
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179   99 AITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESgKKEAFGTLGMIYAMLAIGLLG 178
Cdd:TIGR02882 242 ALALMTTDRIFDTAFFTVAHGGMPMLWANLFWIWGHPEVYIVILPAFGIYSEIISTFA-QKRLFGYKSMVWSTVGIAFLS 320
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  179 FVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVVLANSSID 258
Cdd:TIGR02882 321 FLVWVHHFFTMGNGALINSFFSITTMAIAIPTGVKIFNWLLTLYKGKIRFTTPMLFSLAFIPNFLIGGVTGVMLAMASAD 400
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  259 IILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRRYSDY- 337
Cdd:TIGR02882 401 YQYHNTYFLVAHFHYVLITGVVFACLAGLIYWYPKMFGYKLNERLGKWCFWFFMIGFNVCFFPMYILGLDGMPRRMYTYs 480
                         330
                  ....*....|....*...
gi 528749179  338 -PDVYTSWNVLSSIGSTI 354
Cdd:TIGR02882 481 pSDGWFPLNLISTIGALL 498
PRK15017 PRK15017
cytochrome o ubiquinol oxidase subunit I; Provisional
16-339 3.54e-79

cytochrome o ubiquinol oxidase subunit I; Provisional


Pssm-ID: 184978  Cd Length: 663  Bit Score: 256.40  E-value: 3.54e-79
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  16 AGTGWTVYPPLSAGIAHGGASVDLAIFSLHLAGISSILGAVNFITTTINMRTPGMSLDQTPLFVWSVAITALLLLLSLPV 95
Cdd:PRK15017 166 AQTGWLAYPPLSGIEYSPGVGVDYWIWSLQLSGIGTTLTGINFFVTILKMRAPGMTMFKMPVFTWASLCANVLIIASFPI 245
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179  96 LAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIISQESgKKEAFGTLGMIYAMLAIG 175
Cdd:PRK15017 246 LTVTVALLTLDRYLGTHFFTNDMGGNMMMYINLIWAWGHPEVYILILPVFGVFSEIAATFS-RKRLFGYTSLVWATVCIT 324
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 176 LLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATLHGTQLTYSPALLWALGFVFLFTIGGLTGVVLANS 255
Cdd:PRK15017 325 VLSFIVWLHHFFTMGAGANVNAFFGITTMIIAIPTGVKIFNWLFTMYQGRIVFHSAMLWTIGFIVTFSVGGMTGVLLAVP 404
                        250       260       270       280       290       300       310       320
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 256 SIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWYPLFTGLSLNPKWLTIQFTIMFVGVNLTFFPQHFLGLAGMPRRYS 335
Cdd:PRK15017 405 GADFVLHNSLFLIAHFHNVIIGGVVFGCFAGMTYWWPKAFGFKLNETWGKRAFWFWIIGFFVAFMPLYALGFMGMTRRLS 484

                 ....
gi 528749179 336 DYPD 339
Cdd:PRK15017 485 QQID 488
ba3-like_Oxidase_I cd01660
ba3-like heme-copper oxidase subunit I. The ba3 family of heme-copper oxidases are ...
121-356 2.18e-19

ba3-like heme-copper oxidase subunit I. The ba3 family of heme-copper oxidases are transmembrane protein complexes in the respiratory chains of prokaryotes and some archaea which catalyze the reduction of O2 and simultaneously pump protons across the membrane. It has been proposed that Archaea acquired heme-copper oxidases through gene transfer from Gram-positive bacteria. The ba3 family contains oxidases that lack the conserved residues that form the D- and K-pathways in CcO and ubiquinol oxidase. Instead they contain a potential alternative K-pathway. Additional proton channels have been proposed for this family of oxidases but none have been identified definitively. For general information on the heme-copper oxidase superfamily, please see cd00919.


Pssm-ID: 238830  Cd Length: 473  Bit Score: 89.65  E-value: 2.18e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 121 DPILYQHLFWFFGHPEVYILILPGFGMISHIISQESGKKEAFGTLGMIyAMLAIGLLGFVVWAHHMFT-VGMDVDTRAYF 199
Cdd:cd01660  200 DVLLSRTLFWWFGHPLVYFWLLPAYIAWYTILPKIAGGKLFSDPLARL-AFILFLLFSTPVGFHHQFAdPGIGPGWKFIH 278
                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 200 TSATMIIAVPTGIKIFSWLATL-HGTQLTYSPALLW---------------ALGFVFlFTIGGLTGVVLANSSIDIILHD 263
Cdd:cd01660  279 MVLTFMVALPSLLTAFTVFASLeIAGRLRGGKGLFGwiralpwgdpmflalFLAMLM-FIPGGAGGIINASYQLNYVVHN 357
                        170       180       190       200       210       220       230       240
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 528749179 264 TYYVVAHFHyvLSMGAVFAIMAGFIQWY--PLFTGLSLNPKWLTI-QFTIMFVGVNLTFFPQHFLGLAGMPRR--YSDYP 338
Cdd:cd01660  358 TAWVPGHFH--LTVGGAVALTFMAVAYWlvPHLTGRELAAKRLALaQPWLWFVGMTIMSTAMHVAGLLGAPRRtaEAQYG 435
                        250       260
                 ....*....|....*....|...
gi 528749179 339 DVY-----TSWNVLSSIGSTISF 356
Cdd:cd01660  436 GLPaagewAPYQQLMAIGGTILF 458
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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