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Conserved domains on  [gi|723219682|gb|AIX87863|]
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cytochrome oxidase subunit 1, partial (mitochondrion) [Neogoniolithon fosliei]

Protein Classification

heme-copper oxidase family protein( domain architecture ID 14)

heme-copper oxidase family protein may catalyze the transfer of electrons from an electron donor onto molecular oxygen

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
Heme_Cu_Oxidase_I super family cl00275
Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in ...
 1-178 1.05e-96

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.


The actual alignment was detected with superfamily member cd01663:

Pssm-ID: 469701  Cd Length: 488  Bit Score: 288.23  E-value: 1.05e-96
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:cd01663   31 ELSQPGS--QLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPRLNNLSFWLLPPSLLLLLLSAL 108

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:cd01663  109 VEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLL 188

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:cd01663  189 SLPVLAGAITMLLTDRNF 206
 
Name Accession Description Interval E-value
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
 1-178 1.05e-96

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: 288.23  E-value: 1.05e-96
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:cd01663   31 ELSQPGS--QLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPRLNNLSFWLLPPSLLLLLLSAL 108

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:cd01663  109 VEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLL 188

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:cd01663  189 SLPVLAGAITMLLTDRNF 206
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
 1-178 3.26e-93

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 279.83  E-value: 3.26e-93
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00153  38 ELGQPGS--LIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSLTLLLSSSM 115

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00153 116 VESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGMTLDRMPLFVWSVLITAILLLL 195

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00153 196 SLPVLAGAITMLLTDRNL 213
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
1-178 5.12e-56

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


Pssm-ID: 440605  Cd Length: 535  Bit Score: 184.18  E-value: 5.12e-56
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNHLLLGNHqvYNVLITAHAILMIFFLVMPvMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:COG0843   43 QLAGPGLGLLSPET--YNQLFTMHGTIMIFFFATP-FLAGFGNYLVPLQIGARDMAFPRLNALSFWLYLFGGLLLLISLF 119

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:COG0843  120 VGGAADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRAPGMTLMRMPLFTWAALVTSILILL 199

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:COG0843  200 AFPVLAAALLLLLLDRSL 217
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
 1-178 6.86e-35

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: 126.53  E-value: 6.86e-35
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682    1 ELAQPGNHLLlgNHQVYNVLITAHAILMIFFLVMPvMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:pfam00115  27 QLAFPGLNFL--SPLTYNQLRTLHGNLMIFWFATP-FLFGFGNYLVPLMIGARDMAFPRLNALSFWLVVLGAVLLLASFG 103

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   81 ievGAGTGWTVYPPLssiqshsgAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMyRIPLFVWSILVTAVLLLL 160
Cdd:pfam00115 104 ---GATTGWTEYPPL--------VGVDLWYIGLLLAGVSSLLGAINFIVTILKRRAPGMTL-RMPLFVWAILATAILILL 171

                         170
                  ....*....|....*...
gi 723219682  161 SVPVLAGAITMLLTDRNF 178
Cdd:pfam00115 172 AFPVLAAALLLLLLDRSL 189
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
 1-178 1.43e-28

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: 110.71  E-value: 1.43e-28
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682    1 ELAQPGNHLLLGNHqvYNVLITAHAILMIFFLVMPVMIGgFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:TIGR02882  78 QLTVPDNKFLDAQH--YNEIFTTHGVIMIIFMAMPFIIG-LMNIVVPLQIGARDVAFPVLNALSFWLFFAGAMLFNISFV 154

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:TIGR02882 155 IGGSPDAGWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAPGMKLMQMPMFTWTTLITTLIIIF 234

                         170
                  ....*....|....*...
gi 723219682  161 SVPVLAGAITMLLTDRNF 178
Cdd:TIGR02882 235 AFPVLTVALALMTTDRIF 252
 
Name Accession Description Interval E-value
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
 1-178 1.05e-96

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: 288.23  E-value: 1.05e-96
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:cd01663   31 ELSQPGS--QLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPRLNNLSFWLLPPSLLLLLLSAL 108

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:cd01663  109 VEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLL 188

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:cd01663  189 SLPVLAGAITMLLTDRNF 206
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
 1-178 3.26e-93

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 279.83  E-value: 3.26e-93
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00153  38 ELGQPGS--LIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSLTLLLSSSM 115

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00153 116 VESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGMTLDRMPLFVWSVLITAILLLL 195

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00153 196 SLPVLAGAITMLLTDRNL 213
COX1 MTH00167
cytochrome c oxidase subunit I; Provisional
 1-178 1.68e-85

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177222  Cd Length: 512  Bit Score: 260.38  E-value: 1.68e-85
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00167  40 ELSQPGS--LLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSLLLLLASSG 117

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00167 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGSINFITTIINMKPPGITQYQTPLFVWSILVTTILLLL 197

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00167 198 SLPVLAAAITMLLTDRNL 215
COX1 MTH00223
cytochrome c oxidase subunit I; Provisional
 1-178 2.13e-83

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177260  Cd Length: 512  Bit Score: 254.90  E-value: 2.13e-83
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGnhLLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00223  37 ELGQPG--ALLGDDQLYNVIVTAHAFVMIFFLVMPMMIGGFGNWLVPLMLGAPDMAFPRLNNMSFWLLPPSLYLLLSSSA 114

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00223 115 VESGVGTGWTVYPPLSSNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTIINMRSPGMQLERLPLFVWSVKVTAFLLLL 194

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00223 195 SLPVLAGAITMLLTDRNF 212
COX1 MTH00116
cytochrome c oxidase subunit I; Provisional
 1-177 1.23e-81

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177177  Cd Length: 515  Bit Score: 250.39  E-value: 1.23e-81
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00116  40 ELGQPGT--LLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASST 117

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00116 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGAINFITTCINMKPPAMSQYQTPLFVWSVLITAVLLLL 197

                        170
                 ....*....|....*..
gi 723219682 161 SVPVLAGAITMLLTDRN 177
Cdd:MTH00116 198 SLPVLAAGITMLLTDRN 214
COX1 MTH00142
cytochrome c oxidase subunit I; Provisional
 1-178 3.38e-81

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214431  Cd Length: 511  Bit Score: 249.26  E-value: 3.38e-81
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00142  38 ELGQPGS--LLGDDQLYNVIVTAHAFVMIFFMVMPVMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPALLLLLSSAA 115

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00142 116 VESGAGTGWTVYPPLSSNLAHSGGSVDLAIFSLHLAGVSSILGAINFITTVINMRAGGMKFERVPLFVWSVKITAILLLL 195

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00142 196 SLPVLAGAITMLLTDRNF 213
COX1 MTH00182
cytochrome c oxidase subunit I; Provisional
 1-178 2.72e-77

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214451  Cd Length: 525  Bit Score: 239.34  E-value: 2.72e-77
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00182  42 ELSAPGA--MLGDDHLYNVIVTAHAFIMIFFLVMPVMIGGFGNWLVPLYIGAPDMAFPRLNNISFWLLPPALILLLGSAF 119

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00182 120 VEQGAGTGWTVYPPLSSIQAHSGGAVDMAIFSLHLAGVSSILGAINFITTIFNMRAPGVTFNRLPLFVWSILITAFLLLL 199

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00182 200 SLPVLAGAITMLLTDRNF 217
COX1 MTH00184
cytochrome c oxidase subunit I; Provisional
 1-178 8.85e-76

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177235  Cd Length: 519  Bit Score: 235.49  E-value: 8.85e-76
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00184  42 ELSAPGS--MLGDDHLYNVIVTAHAFVMIFFLVMPVMIGGFGNWFVPLYIGAPDMAFPRLNNISFWLLPPALTLLLGSAF 119

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00184 120 VEQGAGTGWTVYPPLSSIQAHSGGSVDMAIFSLHLAGISSILGAMNFITTIFNMRAPGITMDRMPLFVWSILVTTFLLLL 199

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00184 200 SLPVLAGAITMLLTDRNF 217
COX1 MTH00103
cytochrome c oxidase subunit I; Validated
 1-178 2.91e-73

cytochrome c oxidase subunit I; Validated


Pssm-ID: 177165  Cd Length: 513  Bit Score: 228.61  E-value: 2.91e-73
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00103  40 ELGQPGT--LLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSM 117

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00103 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAMSQYQTPLFVWSVLITAVLLLL 197

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00103 198 SLPVLAAGITMLLTDRNL 215
COX1 MTH00183
cytochrome c oxidase subunit I; Provisional
 1-178 1.43e-72

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177234  Cd Length: 516  Bit Score: 227.11  E-value: 1.43e-72
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00183  40 ELSQPGA--LLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSG 117

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00183 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAISQYQTPLFVWAVLITAVLLLL 197

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00183 198 SLPVLAAGITMLLTDRNL 215
COX1 MTH00037
cytochrome c oxidase subunit I; Provisional
 1-177 4.43e-72

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177112  Cd Length: 517  Bit Score: 225.86  E-value: 4.43e-72
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00037  40 ELAQPGS--LLQDDQIYNVIVTAHALVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLIPPSFLLLLASAG 117

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00037 118 VESGAGTGWTIYPPLSSNIAHAGGSVDLAIFSLHLAGASSILASINFITTIINMRTPGMTFDRLPLFVWSVFITAFLLLL 197

                        170
                 ....*....|....*..
gi 723219682 161 SVPVLAGAITMLLTDRN 177
Cdd:MTH00037 198 SLPVLAGAITMLLTDRN 214
COX1 MTH00077
cytochrome c oxidase subunit I; Provisional
 1-177 5.11e-72

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214419  Cd Length: 514  Bit Score: 225.59  E-value: 5.11e-72
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00077  40 ELSQPGT--LLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSG 117

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00077 118 VEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTSINMKPPSMSQYQTPLFVWSVLITAVLLLL 197

                        170
                 ....*....|....*..
gi 723219682 161 SVPVLAGAITMLLTDRN 177
Cdd:MTH00077 198 SLPVLAAGITMLLTDRN 214
COX1 MTH00026
cytochrome c oxidase subunit I; Provisional
 1-178 4.23e-71

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 164599  Cd Length: 534  Bit Score: 223.74  E-value: 4.23e-71
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00026  41 ELSSPGS--MLGDDHLYNVIVTAHAFVMIFFLVMPTMIGGFGNWFVPLMIGAPDMAFPRLNNISFWLLPPALFLLLGSSL 118

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00026 119 VEQGAGTGWTVYPPLASIQAHSGGSVDMAIFSLHLAGLSSILGAMNFITTVMNMRTPGMTMSRIPLFVWSVFITAILLLL 198

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00026 199 SLPVLAGAITMLLTDRNF 216
COX1 MTH00007
cytochrome c oxidase subunit I; Validated
 1-177 2.52e-70

cytochrome c oxidase subunit I; Validated


Pssm-ID: 133649  Cd Length: 511  Bit Score: 221.31  E-value: 2.52e-70
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00007  37 ELGQPGA--FLGSDQLYNTIVTAHAFLMIFFLVMPVFIGGFGNWLVPLMLGAPDMAFPRLNNMSFWLLPPALILLVSSAA 114

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00007 115 VEKGVGTGWTVYPPLASNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTVINMRWKGLRLERIPLFVWAVVITVVLLLL 194

                        170
                 ....*....|....*..
gi 723219682 161 SVPVLAGAITMLLTDRN 177
Cdd:MTH00007 195 SLPVLAGAITMLLTDRN 211
COX1 MTH00079
cytochrome c oxidase subunit I; Provisional
 1-178 7.69e-67

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177148  Cd Length: 508  Bit Score: 211.85  E-value: 7.69e-67
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGnhLLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:MTH00079  41 ELSKPG--LLLGNGQLYNSVITAHAILMIFFMVMPSMIGGFGNWMLPLMLGAPDMSFPRLNNLSFWLLPTSLFLILDSCF 118

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSiQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:MTH00079 119 VDMGPGTSWTVYPPLST-LGHPGSSVDLAIFSLHCAGISSILGGINFMVTTKNLRSSSISLEHMSLFVWTVFVTVFLLVL 197

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:MTH00079 198 SLPVLAGAITMLLTDRNL 215
Heme_Cu_Oxidase_I cd00919
Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in ...
 1-178 4.47e-60

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: 193.13  E-value: 4.47e-60
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNhlLLGNHQVYNVLITAHAILMIFFLVMPVMIGGFGNWFVPiMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:cd00919   29 ELATPGS--LFLDPQLYNQLVTAHGVIMIFFFVMPAIFGGFGNLLPP-LIGARDLAFPRLNNLSFWLFPPGLLLLLSSVL 105

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:cd00919  106 VGGGAGTGWTFYPPLSTLSYSSGVGVDLAILGLHLAGVSSILGAINFITTILNMRAPGMTLDKMPLFVWSVLVTAILLLL 185

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:cd00919  186 ALPVLAAALVMLLLDRNF 203
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
1-178 5.12e-56

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


Pssm-ID: 440605  Cd Length: 535  Bit Score: 184.18  E-value: 5.12e-56
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNHLLLGNHqvYNVLITAHAILMIFFLVMPvMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:COG0843   43 QLAGPGLGLLSPET--YNQLFTMHGTIMIFFFATP-FLAGFGNYLVPLQIGARDMAFPRLNALSFWLYLFGGLLLLISLF 119

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:COG0843  120 VGGAADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRAPGMTLMRMPLFTWAALVTSILILL 199

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:COG0843  200 AFPVLAAALLLLLLDRSL 217
Ubiquinol_Oxidase_I cd01662
Ubiquinol oxidase subunit I. Ubiquinol oxidase, the terminal oxidase in the respiratory ...
 1-178 2.04e-47

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: 160.82  E-value: 2.04e-47
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   1 ELAQPGNHLLLGNHqvYNVLITAHAILMIFFLVMPVMIGgFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:cd01662   35 QLALPGNDFLSPEH--YNQIFTMHGTIMIFLFAMPLVFG-LMNYLVPLQIGARDVAFPRLNALSFWLFLFGGLLLNASLL 111

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:cd01662  112 IGGFPDAGWFAYPPLSGLEYSPGVGVDYWILGLQFSGIGTLLGAINFIVTILKMRAPGMTLMRMPIFTWTTLVTSILILF 191

                        170
                 ....*....|....*...
gi 723219682 161 SVPVLAGAITMLLTDRNF 178
Cdd:cd01662  192 AFPVLTAALALLELDRYF 209
COX1 MTH00048
cytochrome c oxidase subunit I; Provisional
 16-178 3.76e-44

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177123  Cd Length: 511  Bit Score: 152.52  E-value: 3.76e-44
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  16 VYNVLITAHAILMIFFLVMPVMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSLIevGAGTGWTVYPPL 95
Cdd:MTH00048  54 VYNFLITNHGIIMIFFFLMPVLIGGFGNYLLPLLLGLSDLNLPRLNALSAWLLVPSIVFLLLSMCL--GAGVGWTFYPPL 131

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  96 SSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSmYRIPLFVWSILVTAVLLLLSVPVLAGAITMLLTD 175
Cdd:MTH00048 132 SSSLFSSSWGVDFLMFSLHLAGVSSLFGSINFICTIYSAFMTNVF-SRTSIILWSYLFTSILLLLSLPVLAAAITMLLFD 210


                 ...
gi 723219682 176 RNF 178
Cdd:MTH00048 211 RNF 213
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
 1-178 6.86e-35

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: 126.53  E-value: 6.86e-35
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682    1 ELAQPGNHLLlgNHQVYNVLITAHAILMIFFLVMPvMIGGFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:pfam00115  27 QLAFPGLNFL--SPLTYNQLRTLHGNLMIFWFATP-FLFGFGNYLVPLMIGARDMAFPRLNALSFWLVVLGAVLLLASFG 103

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   81 ievGAGTGWTVYPPLssiqshsgAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMyRIPLFVWSILVTAVLLLL 160
Cdd:pfam00115 104 ---GATTGWTEYPPL--------VGVDLWYIGLLLAGVSSLLGAINFIVTILKRRAPGMTL-RMPLFVWAILATAILILL 171

                         170
                  ....*....|....*...
gi 723219682  161 SVPVLAGAITMLLTDRNF 178
Cdd:pfam00115 172 AFPVLAAALLLLLLDRSL 189
PRK15017 PRK15017
cytochrome o ubiquinol oxidase subunit I; Provisional
 2-176 1.12e-32

cytochrome o ubiquinol oxidase subunit I; Provisional


Pssm-ID: 184978  Cd Length: 663  Bit Score: 122.35  E-value: 1.12e-32
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   2 LAQPGNHLLLGNHQvYNVLITAHAILMIFFLVMPVMIGgFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSLI 81
Cdd:PRK15017  85 LASAGEAGFLPPHH-YDQIFTAHGVIMIFFVAMPFVIG-LMNLVVPLQIGARDVAFPFLNNLSFWFTVVGVILVNVSLGV 162

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682  82 EVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLLS 161
Cdd:PRK15017 163 GEFAQTGWLAYPPLSGIEYSPGVGVDYWIWSLQLSGIGTTLTGINFFVTILKMRAPGMTMFKMPVFTWASLCANVLIIAS 242

                        170
                 ....*....|....*
gi 723219682 162 VPVLAGAITMLLTDR 176
Cdd:PRK15017 243 FPILTVTVALLTLDR 257
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
 1-178 1.43e-28

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: 110.71  E-value: 1.43e-28
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682    1 ELAQPGNHLLLGNHqvYNVLITAHAILMIFFLVMPVMIGgFGNWFVPIMIGSPDMAFPRLNNISFWLLPPALFLLLTSSL 80
Cdd:TIGR02882  78 QLTVPDNKFLDAQH--YNEIFTTHGVIMIIFMAMPFIIG-LMNIVVPLQIGARDVAFPVLNALSFWLFFAGAMLFNISFV 154

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 723219682   81 IEVGAGTGWTVYPPLSSIQSHSGAAVDLAIFSLHLSGASSILGAVNFISTIMNMRNPGQSMYRIPLFVWSILVTAVLLLL 160
Cdd:TIGR02882 155 IGGSPDAGWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAPGMKLMQMPMFTWTTLITTLIIIF 234

                         170
                  ....*....|....*...
gi 723219682  161 SVPVLAGAITMLLTDRNF 178
Cdd:TIGR02882 235 AFPVLTVALALMTTDRIF 252
 
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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