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Conserved domains on  [gi|229425702|gb|ACQ64234|]
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cytochrome oxidase subunit 1, partial (mitochondrion) [Apanteles sp. jft02]

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 ...
 1-215 8.02e-131

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 MTH00153:

Pssm-ID: 469701  Cd Length: 511  Bit Score: 377.67  E-value: 8.02e-131
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:MTH00153  15 TLYFIFGAWSGMVGTSLSLLIRAELGQPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPR 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:MTH00153  95 MNNMSFWLLPPSLTLLLSSSMVESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGM 174

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00153 175 TLDRMPLFVWSVLITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 229
 
Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
 1-215 8.02e-131

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 377.67  E-value: 8.02e-131
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:MTH00153  15 TLYFIFGAWSGMVGTSLSLLIRAELGQPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPR 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:MTH00153  95 MNNMSFWLLPPSLTLLLSSSMVESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGM 174

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00153 175 TLDRMPLFVWSVLITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 229
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
 1-215 9.41e-121

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: 351.01  E-value: 9.41e-121
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:cd01663    8 TLYLIFGLWSGLVGTSLSLLIRLELSQPGSQLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPR 87

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:cd01663   88 LNNLSFWLLPPSLLLLLLSALVEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGM 167

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:cd01663  168 TLEKMPLFVWSVLITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILY 222
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
1-215 3.35e-64

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


Pssm-ID: 440605  Cd Length: 535  Bit Score: 207.29  E-value: 3.35e-64
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPvMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:COG0843   20 IMYLVTAFVFLLIGGLLALLMRLQLAGPGLGLLSPETYNQLFTMHGTIMIFFFATP-FLAGFGNYLVPLQIGARDMAFPR 98

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:COG0843   99 LNALSFWLYLFGGLLLLISLFVGGAADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRAPGM 178

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:COG0843  179 TLMRMPLFTWAALVTSILILLAFPVLAAALLLLLLDRSLGTHFFDPAGGGDPLLW 233
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
 1-215 8.55e-36

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: 130.39  E-value: 8.55e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702    1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPvMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:pfam00115   4 LLYLVTALVWFLVGGLLGLLIRLQLAFPGLNFLSPLTYNQLRTLHGNLMIFWFATP-FLFGFGNYLVPLMIGARDMAFPR 82

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   81 MNNMSFWLLIPSLFLLILSGfinVGVGTGWTVYPPLslilghggMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:pfam00115  83 LNALSFWLVVLGAVLLLASF---GGATTGWTEYPPL--------VGVDLWYIGLLLAGVSSLLGAINFIVTILKRRAPGM 151

                         170       180       190       200       210
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702  161 IMdKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNtsffdpAGGGDPILY 215
Cdd:pfam00115 152 TL-RMPLFVWAILATAILILLAFPVLAAALLLLLLDRSLG------AGGGDPLLD 199
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
 18-215 3.30e-30

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: 116.88  E-value: 3.30e-30
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   18 SLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGgFGNWLIPLMLGAPDMSFPRMNNMSFWLLIPSLFLLI 97
Cdd:TIGR02882  72 ALLMRAQLTVPDNKFLDAQHYNEIFTTHGVIMIIFMAMPFIIG-LMNIVVPLQIGARDVAFPVLNALSFWLFFAGAMLFN 150

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   98 LSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFIMDKMSLFIWSVFITAI 177
Cdd:TIGR02882 151 ISFVIGGSPDAGWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAPGMKLMQMPMFTWTTLITTL 230

                         170       180       190
                  ....*....|....*....|....*....|....*...
gi 229425702  178 LLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:TIGR02882 231 IIIFAFPVLTVALALMTTDRIFDTAFFTVAHGGMPMLW 268
 
Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
 1-215 8.02e-131

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 377.67  E-value: 8.02e-131
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:MTH00153  15 TLYFIFGAWSGMVGTSLSLLIRAELGQPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPR 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:MTH00153  95 MNNMSFWLLPPSLTLLLSSSMVESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGM 174

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00153 175 TLDRMPLFVWSVLITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 229
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
 1-215 9.41e-121

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: 351.01  E-value: 9.41e-121
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:cd01663    8 TLYLIFGLWSGLVGTSLSLLIRLELSQPGSQLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPR 87

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:cd01663   88 LNNLSFWLLPPSLLLLLLSALVEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGM 167

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:cd01663  168 TLEKMPLFVWSVLITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILY 222
COX1 MTH00167
cytochrome c oxidase subunit I; Provisional
 2-215 3.77e-113

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177222  Cd Length: 512  Bit Score: 332.80  E-value: 3.77e-113
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00167  18 LYFIFGAWAGMVGTALSLLIRAELSQPGSLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRM 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00167  98 NNMSFWLLPPSLLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGSINFITTIINMKPPGIT 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00167 178 QYQTPLFVWSILVTTILLLLSLPVLAAAITMLLTDRNLNTTFFDPAGGGDPILY 231
COX1 MTH00223
cytochrome c oxidase subunit I; Provisional
 2-215 1.47e-109

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177260  Cd Length: 512  Bit Score: 323.47  E-value: 1.47e-109
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00223  15 LYLIFGMWSGLVGTSLSLLIRAELGQPGALLGDDQLYNVIVTAHAFVMIFFLVMPMMIGGFGNWLVPLMLGAPDMAFPRL 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00223  95 NNMSFWLLPPSLYLLLSSSAVESGVGTGWTVYPPLSSNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTIINMRSPGMQ 174

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00223 175 LERLPLFVWSVKVTAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILY 228
COX1 MTH00116
cytochrome c oxidase subunit I; Provisional
 2-215 2.25e-108

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177177  Cd Length: 515  Bit Score: 320.50  E-value: 2.25e-108
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00116  18 LYLIFGAWAGMVGTALSLLIRAELGQPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRM 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00116  98 NNMSFWLLPPSFLLLLASSTVEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGAINFITTCINMKPPAMS 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00116 178 QYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILY 231
COX1 MTH00142
cytochrome c oxidase subunit I; Provisional
 2-215 6.02e-106

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214431  Cd Length: 511  Bit Score: 314.35  E-value: 6.02e-106
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00142  16 LYFLFGAWAGMVGTGLSLLIRAELGQPGSLLGDDQLYNVIVTAHAFVMIFFMVMPVMIGGFGNWLVPLMLGAPDMAFPRM 95

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00142  96 NNMSFWLLPPALLLLLSSAAVESGAGTGWTVYPPLSSNLAHSGGSVDLAIFSLHLAGVSSILGAINFITTVINMRAGGMK 175

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00142 176 FERVPLFVWSVKITAILLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILY 229
COX1 MTH00007
cytochrome c oxidase subunit I; Validated
 2-215 5.80e-97

cytochrome c oxidase subunit I; Validated


Pssm-ID: 133649  Cd Length: 511  Bit Score: 291.42  E-value: 5.80e-97
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00007  15 LYFILGVWGGLLGTSMSLLIRIELGQPGAFLGSDQLYNTIVTAHAFLMIFFLVMPVFIGGFGNWLVPLMLGAPDMAFPRL 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00007  95 NNMSFWLLPPALILLVSSAAVEKGVGTGWTVYPPLASNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTVINMRWKGLR 174

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00007 175 LERIPLFVWAVVITVVLLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 228
COX1 MTH00037
cytochrome c oxidase subunit I; Provisional
 2-215 1.57e-96

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177112  Cd Length: 517  Bit Score: 290.19  E-value: 1.57e-96
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00037  18 LYLIFGAWAGMVGTAMSVIIRTELAQPGSLLQDDQIYNVIVTAHALVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRM 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00037  98 NNMSFWLIPPSFLLLLASAGVESGAGTGWTIYPPLSSNIAHAGGSVDLAIFSLHLAGASSILASINFITTIINMRTPGMT 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00037 178 FDRLPLFVWSVFITAFLLLLSLPVLAGAITMLLTDRNINTTFFDPAGGGDPILF 231
COX1 MTH00103
cytochrome c oxidase subunit I; Validated
 2-215 3.59e-94

cytochrome c oxidase subunit I; Validated


Pssm-ID: 177165  Cd Length: 513  Bit Score: 284.08  E-value: 3.59e-94
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00103  18 LYLLFGAWAGMVGTALSLLIRAELGQPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRM 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00103  98 NNMSFWLLPPSFLLLLASSMVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAMS 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00103 178 QYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILY 231
COX1 MTH00183
cytochrome c oxidase subunit I; Provisional
 2-215 8.98e-94

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177234  Cd Length: 516  Bit Score: 283.35  E-value: 8.98e-94
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00183  18 LYLVFGAWAGMVGTALSLLIRAELSQPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRM 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00183  98 NNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAIS 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00183 178 QYQTPLFVWAVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILY 231
COX1 MTH00077
cytochrome c oxidase subunit I; Provisional
 2-215 1.02e-93

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214419  Cd Length: 514  Bit Score: 282.98  E-value: 1.02e-93
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00077  18 LYLVFGAWAGMVGTALSLLIRAELSQPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRM 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00077  98 NNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTSINMKPPSMS 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00077 178 QYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPVLY 231
COX1 MTH00182
cytochrome c oxidase subunit I; Provisional
 2-215 4.71e-91

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214451  Cd Length: 525  Bit Score: 276.70  E-value: 4.71e-91
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00182  20 LYLVFGAGAGMIGTAFSMLIRLELSAPGAMLGDDHLYNVIVTAHAFIMIFFLVMPVMIGGFGNWLVPLYIGAPDMAFPRL 99

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00182 100 NNISFWLLPPALILLLGSAFVEQGAGTGWTVYPPLSSIQAHSGGAVDMAIFSLHLAGVSSILGAINFITTIFNMRAPGVT 179

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00182 180 FNRLPLFVWSILITAFLLLLSLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILF 233
COX1 MTH00184
cytochrome c oxidase subunit I; Provisional
 2-215 3.62e-90

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177235  Cd Length: 519  Bit Score: 274.01  E-value: 3.62e-90
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00184  20 LYLLFGAFAGMIGTAFSMLIRLELSAPGSMLGDDHLYNVIVTAHAFVMIFFLVMPVMIGGFGNWFVPLYIGAPDMAFPRL 99

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00184 100 NNISFWLLPPALTLLLGSAFVEQGAGTGWTVYPPLSSIQAHSGGSVDMAIFSLHLAGISSILGAMNFITTIFNMRAPGIT 179

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00184 180 MDRMPLFVWSILVTTFLLLLSLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILY 233
COX1 MTH00079
cytochrome c oxidase subunit I; Provisional
 2-215 1.43e-88

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177148  Cd Length: 508  Bit Score: 269.63  E-value: 1.43e-88
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00079  19 LYFLFGLWSGMVGTSLSLIIRLELSKPGLLLGNGQLYNSVITAHAILMIFFMVMPSMIGGFGNWMLPLMLGAPDMSFPRL 98

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLiLGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00079  99 NNLSFWLLPTSLFLILDSCFVDMGPGTSWTVYPPLST-LGHPGSSVDLAIFSLHCAGISSILGGINFMVTTKNLRSSSIS 177

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00079 178 LEHMSLFVWTVFVTVFLLVLSLPVLAGAITMLLTDRNLNTSFFDPSTGGNPLLY 231
COX1 MTH00026
cytochrome c oxidase subunit I; Provisional
 2-215 5.64e-80

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 164599  Cd Length: 534  Bit Score: 248.39  E-value: 5.64e-80
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPRM 81
Cdd:MTH00026  19 LYLVFGALSGAIGTAFSMLIRLELSSPGSMLGDDHLYNVIVTAHAFVMIFFLVMPTMIGGFGNWFVPLMIGAPDMAFPRL 98

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:MTH00026  99 NNISFWLLPPALFLLLGSSLVEQGAGTGWTVYPPLASIQAHSGGSVDMAIFSLHLAGLSSILGAMNFITTVMNMRTPGMT 178

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00026 179 MSRIPLFVWSVFITAILLLLSLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILY 232
Heme_Cu_Oxidase_I cd00919
Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in ...
 1-215 3.44e-72

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: 226.26  E-value: 3.44e-72
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPlMLGAPDMSFPR 80
Cdd:cd00919    6 LLYLIFAFVALLLGGLLALLIRLELATPGSLFLDPQLYNQLVTAHGVIMIFFFVMPAIFGGFGNLLPP-LIGARDLAFPR 84

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:cd00919   85 LNNLSFWLFPPGLLLLLSSVLVGGGAGTGWTFYPPLSTLSYSSGVGVDLAILGLHLAGVSSILGAINFITTILNMRAPGM 164

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:cd00919  165 TLDKMPLFVWSVLVTAILLLLALPVLAAALVMLLLDRNFGTSFFDPAGGGDPVLY 219
COX1 MTH00048
cytochrome c oxidase subunit I; Provisional
 1-215 2.70e-64

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177123  Cd Length: 511  Bit Score: 206.84  E-value: 2.70e-64
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:MTH00048  18 VIYTLLGVWSGFVGLSLSLLIRLNFLDPYYNVISLDVYNFLITNHGIIMIFFFLMPVLIGGFGNYLLPLLLGLSDLNLPR 97

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFInvGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILN-MRVNL 159
Cdd:MTH00048  98 LNALSAWLLVPSIVFLLLSMCL--GAGVGWTFYPPLSSSLFSSSWGVDFLMFSLHLAGVSSLFGSINFICTIYSaFMTNV 175

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*.
gi 229425702 160 FImdKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:MTH00048 176 FS--RTSIILWSYLFTSILLLLSLPVLAAAITMLLFDRNFGSAFFDPLGGGDPVLF 229
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
1-215 3.35e-64

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


Pssm-ID: 440605  Cd Length: 535  Bit Score: 207.29  E-value: 3.35e-64
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPvMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:COG0843   20 IMYLVTAFVFLLIGGLLALLMRLQLAGPGLGLLSPETYNQLFTMHGTIMIFFFATP-FLAGFGNYLVPLQIGARDMAFPR 98

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  81 MNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:COG0843   99 LNALSFWLYLFGGLLLLISLFVGGAADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRAPGM 178

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702 161 IMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:COG0843  179 TLMRMPLFTWAALVTSILILLAFPVLAAALLLLLLDRSLGTHFFDPAGGGDPLLW 233
Ubiquinol_Oxidase_I cd01662
Ubiquinol oxidase subunit I. Ubiquinol oxidase, the terminal oxidase in the respiratory ...
 2-215 4.17e-49

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: 166.99  E-value: 4.17e-49
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   2 LYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGgFGNWLIPLMLGAPDMSFPRM 81
Cdd:cd01662   13 MYIITAFVFFLRGGVDALLMRTQLALPGNDFLSPEHYNQIFTMHGTIMIFLFAMPLVFG-LMNYLVPLQIGARDVAFPRL 91

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  82 NNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFI 161
Cdd:cd01662   92 NALSFWLFLFGGLLLNASLLIGGFPDAGWFAYPPLSGLEYSPGVGVDYWILGLQFSGIGTLLGAINFIVTILKMRAPGMT 171

                        170       180       190       200       210
                 ....*....|....*....|....*....|....*....|....*....|....
gi 229425702 162 MDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:cd01662  172 LMRMPIFTWTTLVTSILILFAFPVLTAALALLELDRYFGTHFFTNALGGNPMLW 225
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
 1-215 8.55e-36

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: 130.39  E-value: 8.55e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702    1 MLYFLFGLWAGMLGFSMSLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPvMIGGFGNWLIPLMLGAPDMSFPR 80
Cdd:pfam00115   4 LLYLVTALVWFLVGGLLGLLIRLQLAFPGLNFLSPLTYNQLRTLHGNLMIFWFATP-FLFGFGNYLVPLMIGARDMAFPR 82

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   81 MNNMSFWLLIPSLFLLILSGfinVGVGTGWTVYPPLslilghggMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLF 160
Cdd:pfam00115  83 LNALSFWLVVLGAVLLLASF---GGATTGWTEYPPL--------VGVDLWYIGLLLAGVSSLLGAINFIVTILKRRAPGM 151

                         170       180       190       200       210
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 229425702  161 IMdKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDRNLNtsffdpAGGGDPILY 215
Cdd:pfam00115 152 TL-RMPLFVWAILATAILILLAFPVLAAALLLLLLDRSLG------AGGGDPLLD 199
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
 18-215 3.30e-30

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: 116.88  E-value: 3.30e-30
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   18 SLIIRLELGMPESLIGNDQIYNSIVTSHAFIMIFFMVMPVMIGgFGNWLIPLMLGAPDMSFPRMNNMSFWLLIPSLFLLI 97
Cdd:TIGR02882  72 ALLMRAQLTVPDNKFLDAQHYNEIFTTHGVIMIIFMAMPFIIG-LMNIVVPLQIGARDVAFPVLNALSFWLFFAGAMLFN 150

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702   98 LSGFINVGVGTGWTVYPPLSLILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFIMDKMSLFIWSVFITAI 177
Cdd:TIGR02882 151 ISFVIGGSPDAGWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAPGMKLMQMPMFTWTTLITTL 230

                         170       180       190
                  ....*....|....*....|....*....|....*...
gi 229425702  178 LLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILY 215
Cdd:TIGR02882 231 IIIFAFPVLTVALALMTTDRIFDTAFFTVAHGGMPMLW 268
PRK15017 PRK15017
cytochrome o ubiquinol oxidase subunit I; Provisional
 38-215 1.12e-29

cytochrome o ubiquinol oxidase subunit I; Provisional


Pssm-ID: 184978  Cd Length: 663  Bit Score: 115.42  E-value: 1.12e-29
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702  38 YNSIVTSHAFIMIFFMVMPVMIGgFGNWLIPLMLGAPDMSFPRMNNMSFWLLIPSLFLLILSGFINVGVGTGWTVYPPLS 117
Cdd:PRK15017  99 YDQIFTAHGVIMIFFVAMPFVIG-LMNLVVPLQIGARDVAFPFLNNLSFWFTVVGVILVNVSLGVGEFAQTGWLAYPPLS 177

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 229425702 118 LILGHGGMSVDMGIFSLHLAGASSIMGAINFITTILNMRVNLFIMDKMSLFIWSVFITAILLLLSLPVLAGAITMLLTDR 197
Cdd:PRK15017 178 GIEYSPGVGVDYWIWSLQLSGIGTTLTGINFFVTILKMRAPGMTMFKMPVFTWASLCANVLIIASFPILTVTVALLTLDR 257

                        170
                 ....*....|....*...
gi 229425702 198 NLNTSFFDPAGGGDPILY 215
Cdd:PRK15017 258 YLGTHFFTNDMGGNMMMY 275
 
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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