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Conserved domains on  [gi|633265751|gb|AHZ45535|]
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cytochrome oxidase subunit 1, partial (mitochondrion) [Olfersia sp. EU_HGF3]

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 ...
 1-226 5.42e-161

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: 454.71  E-value: 5.42e-161
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00153  12 DIGTLYFIFGAWSGMVGTSLSLLIRAELGQPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMA 91

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00153  92 FPRMNNMSFWLLPPSLTLLLSSSMVESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRS 171

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00153 172 KGMTLDRMPLFVWSVLITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFG 237
 
Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
 1-226 5.42e-161

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 454.71  E-value: 5.42e-161
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00153  12 DIGTLYFIFGAWSGMVGTSLSLLIRAELGQPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMA 91

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00153  92 FPRMNNMSFWLLPPSLTLLLSSSMVESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRS 171

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00153 172 KGMTLDRMPLFVWSVLITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFG 237
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
 1-226 1.19e-146

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: 417.65  E-value: 1.19e-146
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:cd01663    5 DIGTLYLIFGLWSGLVGTSLSLLIRLELSQPGSQLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMA 84

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:cd01663   85 FPRLNNLSFWLLPPSLLLLLLSALVEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRA 164

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:cd01663  165 PGMTLEKMPLFVWSVLITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 230
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
1-226 5.44e-79

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


Pssm-ID: 440605  Cd Length: 535  Bit Score: 246.19  E-value: 5.44e-79
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPtLIGGFGNWLVPLMLGAPDMA 80
Cdd:COG0843   17 RIGIMYLVTAFVFLLIGGLLALLMRLQLAGPGLGLLSPETYNQLFTMHGTIMIFFFATP-FLAGFGNYLVPLQIGARDMA 95

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:COG0843   96 FPRLNALSFWLYLFGGLLLLISLFVGGAADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRA 175

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:COG0843  176 PGMTLMRMPLFTWAALVTSILILLAFPVLAAALLLLLLDRSLGTHFFDPAGGGDPLLWQHLFWFFG 241
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
 1-226 5.99e-50

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: 168.14  E-value: 5.99e-50
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751    1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPtLIGGFGNWLVPLMLGAPDMA 80
Cdd:pfam00115   1 RIGLLYLVTALVWFLVGGLLGLLIRLQLAFPGLNFLSPLTYNQLRTLHGNLMIFWFATP-FLFGFGNYLVPLMIGARDMA 79

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   81 FPRMNNMSFWLLPPALsILIMSSMteNGPGTGWTVYPPLsstiahsgASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:pfam00115  80 FPRLNALSFWLVVLGA-VLLLASF--GGATTGWTEYPPL--------VGVDLWYIGLLLAGVSSLLGAINFIVTILKRRA 148

                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751  161 SGISFdRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNtsffdpAGGGDPILYQHLFWFFG 226
Cdd:pfam00115 149 PGMTL-RMPLFVWAILATAILILLAFPVLAAALLLLLLDRSLG------AGGGDPLLDQHLFWWFG 207
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
 2-226 2.62e-37

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: 137.29  E-value: 2.62e-37
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751    2 IGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGgFGNWLVPLMLGAPDMAF 81
Cdd:TIGR02882  53 IGVMYIICAVLMLFRGGIDALLMRAQLTVPDNKFLDAQHYNEIFTTHGVIMIIFMAMPFIIG-LMNIVVPLQIGARDVAF 131

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   82 PRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRSS 161
Cdd:TIGR02882 132 PVLNALSFWLFFAGAMLFNISFVIGGSPDAGWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAP 211

                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 633265751  162 GISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:TIGR02882 212 GMKLMQMPMFTWTTLITTLIIIFAFPVLTVALALMTTDRIFDTAFFTVAHGGMPMLWANLFWIWG 276
 
Name Accession Description Interval E-value
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
 1-226 5.42e-161

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 454.71  E-value: 5.42e-161
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00153  12 DIGTLYFIFGAWSGMVGTSLSLLIRAELGQPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMA 91

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00153  92 FPRMNNMSFWLLPPSLTLLLSSSMVESGAGTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRS 171

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00153 172 KGMTLDRMPLFVWSVLITAILLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFG 237
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
 1-226 1.19e-146

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: 417.65  E-value: 1.19e-146
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:cd01663    5 DIGTLYLIFGLWSGLVGTSLSLLIRLELSQPGSQLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMA 84

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:cd01663   85 FPRLNNLSFWLLPPSLLLLLLSALVEGGAGTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRA 164

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:cd01663  165 PGMTLEKMPLFVWSVLITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 230
COX1 MTH00167
cytochrome c oxidase subunit I; Provisional
 1-226 8.46e-139

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177222  Cd Length: 512  Bit Score: 398.67  E-value: 8.46e-139
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00167  14 DIGTLYFIFGAWAGMVGTALSLLIRAELSQPGSLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMA 93

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00167  94 FPRMNNMSFWLLPPSLLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGSINFITTIINMKP 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00167 174 PGITQYQTPLFVWSILVTTILLLLSLPVLAAAITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFG 239
COX1 MTH00223
cytochrome c oxidase subunit I; Provisional
 1-226 1.55e-135

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177260  Cd Length: 512  Bit Score: 390.11  E-value: 1.55e-135
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00223  11 DIGTLYLIFGMWSGLVGTSLSLLIRAELGQPGALLGDDQLYNVIVTAHAFVMIFFLVMPMMIGGFGNWLVPLMLGAPDMA 90

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00223  91 FPRLNNMSFWLLPPSLYLLLSSSAVESGVGTGWTVYPPLSSNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTIINMRS 170

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00223 171 PGMQLERLPLFVWSVKVTAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 236
COX1 MTH00142
cytochrome c oxidase subunit I; Provisional
 1-226 1.48e-133

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214431  Cd Length: 511  Bit Score: 385.23  E-value: 1.48e-133
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00142  12 DIGTLYFLFGAWAGMVGTGLSLLIRAELGQPGSLLGDDQLYNVIVTAHAFVMIFFMVMPVMIGGFGNWLVPLMLGAPDMA 91

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00142  92 FPRMNNMSFWLLPPALLLLLSSAAVESGAGTGWTVYPPLSSNLAHSGGSVDLAIFSLHLAGVSSILGAINFITTVINMRA 171

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00142 172 GGMKFERVPLFVWSVKITAILLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 237
COX1 MTH00116
cytochrome c oxidase subunit I; Provisional
 1-226 5.51e-133

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177177  Cd Length: 515  Bit Score: 383.67  E-value: 5.51e-133
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00116  14 DIGTLYLIFGAWAGMVGTALSLLIRAELGQPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMA 93

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00116  94 FPRMNNMSFWLLPPSFLLLLASSTVEAGAGTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGAINFITTCINMKP 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00116 174 PAMSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFG 239
COX1 MTH00007
cytochrome c oxidase subunit I; Validated
 1-226 3.08e-120

cytochrome c oxidase subunit I; Validated


Pssm-ID: 133649  Cd Length: 511  Bit Score: 351.13  E-value: 3.08e-120
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00007  11 DIGTLYFILGVWGGLLGTSMSLLIRIELGQPGAFLGSDQLYNTIVTAHAFLMIFFLVMPVFIGGFGNWLVPLMLGAPDMA 90

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00007  91 FPRLNNMSFWLLPPALILLVSSAAVEKGVGTGWTVYPPLASNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTVINMRW 170

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00007 171 KGLRLERIPLFVWAVVITVVLLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFG 236
COX1 MTH00037
cytochrome c oxidase subunit I; Provisional
 1-226 1.10e-118

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177112  Cd Length: 517  Bit Score: 347.59  E-value: 1.10e-118
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00037  14 DIGTLYLIFGAWAGMVGTAMSVIIRTELAQPGSLLQDDQIYNVIVTAHALVMIFFMVMPIMIGGFGNWLIPLMIGAPDMA 93

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00037  94 FPRMNNMSFWLIPPSFLLLLASAGVESGAGTGWTIYPPLSSNIAHAGGSVDLAIFSLHLAGASSILASINFITTIINMRT 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00037 174 PGMTFDRLPLFVWSVFITAFLLLLSLPVLAGAITMLLTDRNINTTFFDPAGGGDPILFQHLFWFFG 239
COX1 MTH00103
cytochrome c oxidase subunit I; Validated
 1-226 5.31e-117

cytochrome c oxidase subunit I; Validated


Pssm-ID: 177165  Cd Length: 513  Bit Score: 343.02  E-value: 5.31e-117
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00103  14 DIGTLYLLFGAWAGMVGTALSLLIRAELGQPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMA 93

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00103  94 FPRMNNMSFWLLPPSFLLLLASSMVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKP 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00103 174 PAMSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFG 239
COX1 MTH00077
cytochrome c oxidase subunit I; Provisional
 1-226 9.35e-117

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214419  Cd Length: 514  Bit Score: 342.31  E-value: 9.35e-117
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00077  14 DIGTLYLVFGAWAGMVGTALSLLIRAELSQPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMA 93

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00077  94 FPRMNNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTSINMKP 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00077 174 PSMSQYQTPLFVWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPVLYQHLFWFFG 239
COX1 MTH00183
cytochrome c oxidase subunit I; Provisional
 1-226 1.33e-116

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177234  Cd Length: 516  Bit Score: 342.29  E-value: 1.33e-116
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00183  14 DIGTLYLVFGAWAGMVGTALSLLIRAELSQPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMA 93

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00183  94 FPRMNNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKP 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00183 174 PAISQYQTPLFVWAVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFG 239
COX1 MTH00182
cytochrome c oxidase subunit I; Provisional
 1-226 2.19e-114

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214451  Cd Length: 525  Bit Score: 336.79  E-value: 2.19e-114
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00182  16 DIGTLYLVFGAGAGMIGTAFSMLIRLELSAPGAMLGDDHLYNVIVTAHAFIMIFFLVMPVMIGGFGNWLVPLYIGAPDMA 95

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00182  96 FPRLNNISFWLLPPALILLLGSAFVEQGAGTGWTVYPPLSSIQAHSGGAVDMAIFSLHLAGVSSILGAINFITTIFNMRA 175

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00182 176 PGVTFNRLPLFVWSILITAFLLLLSLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILFQHLFWFFG 241
COX1 MTH00184
cytochrome c oxidase subunit I; Provisional
 1-226 1.31e-113

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177235  Cd Length: 519  Bit Score: 334.49  E-value: 1.31e-113
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00184  16 DIGTLYLLFGAFAGMIGTAFSMLIRLELSAPGSMLGDDHLYNVIVTAHAFVMIFFLVMPVMIGGFGNWFVPLYIGAPDMA 95

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00184  96 FPRLNNISFWLLPPALTLLLGSAFVEQGAGTGWTVYPPLSSIQAHSGGSVDMAIFSLHLAGISSILGAMNFITTIFNMRA 175

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00184 176 PGITMDRMPLFVWSILVTTFLLLLSLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILYQHLFWFFG 241
COX1 MTH00079
cytochrome c oxidase subunit I; Provisional
 1-226 1.02e-110

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177148  Cd Length: 508  Bit Score: 326.64  E-value: 1.02e-110
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00079  15 DIGTLYFLFGLWSGMVGTSLSLIIRLELSKPGLLLGNGQLYNSVITAHAILMIFFMVMPSMIGGFGNWMLPLMLGAPDMS 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLsSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00079  95 FPRLNNLSFWLLPTSLFLILDSCFVDMGPGTSWTVYPPL-STLGHPGSSVDLAIFSLHCAGISSILGGINFMVTTKNLRS 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00079 174 SSISLEHMSLFVWTVFVTVFLLVLSLPVLAGAITMLLTDRNLNTSFFDPSTGGNPLLYQHLFWFFG 239
COX1 MTH00026
cytochrome c oxidase subunit I; Provisional
 1-226 4.43e-103

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 164599  Cd Length: 534  Bit Score: 308.10  E-value: 4.43e-103
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMA 80
Cdd:MTH00026  15 DIGSLYLVFGALSGAIGTAFSMLIRLELSSPGSMLGDDHLYNVIVTAHAFVMIFFLVMPTMIGGFGNWFVPLMIGAPDMA 94

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:MTH00026  95 FPRLNNISFWLLPPALFLLLGSSLVEQGAGTGWTVYPPLASIQAHSGGSVDMAIFSLHLAGLSSILGAMNFITTVMNMRT 174

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00026 175 PGMTMSRIPLFVWSVFITAILLLLSLPVLAGAITMLLTDRNFNTTFFDPAGGGDPILYQHLFWFFG 240
Heme_Cu_Oxidase_I cd00919
Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in ...
 1-226 1.14e-90

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: 274.02  E-value: 1.14e-90
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPlMLGAPDMA 80
Cdd:cd00919    3 DIGLLYLIFAFVALLLGGLLALLIRLELATPGSLFLDPQLYNQLVTAHGVIMIFFFVMPAIFGGFGNLLPP-LIGARDLA 81

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:cd00919   82 FPRLNNLSFWLFPPGLLLLLSSVLVGGGAGTGWTFYPPLSTLSYSSGVGVDLAILGLHLAGVSSILGAINFITTILNMRA 161

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:cd00919  162 PGMTLDKMPLFVWSVLVTAILLLLALPVLAAALVMLLLDRNFGTSFFDPAGGGDPVLYQHLFWFFG 227
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
1-226 5.44e-79

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


Pssm-ID: 440605  Cd Length: 535  Bit Score: 246.19  E-value: 5.44e-79
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPtLIGGFGNWLVPLMLGAPDMA 80
Cdd:COG0843   17 RIGIMYLVTAFVFLLIGGLLALLMRLQLAGPGLGLLSPETYNQLFTMHGTIMIFFFATP-FLAGFGNYLVPLQIGARDMA 95

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:COG0843   96 FPRLNALSFWLYLFGGLLLLISLFVGGAADVGWTFYPPLSGLEASPGVGVDLWLLGLALFGVGSILGGVNFIVTILKMRA 175

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:COG0843  176 PGMTLMRMPLFTWAALVTSILILLAFPVLAAALLLLLLDRSLGTHFFDPAGGGDPLLWQHLFWFFG 241
COX1 MTH00048
cytochrome c oxidase subunit I; Provisional
 2-226 1.20e-72

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177123  Cd Length: 511  Bit Score: 229.18  E-value: 1.20e-72
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   2 IGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGGFGNWLVPLMLGAPDMAF 81
Cdd:MTH00048  16 IGVIYTLLGVWSGFVGLSLSLLIRLNFLDPYYNVISLDVYNFLITNHGIIMIFFFLMPVLIGGFGNYLLPLLLGLSDLNL 95

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  82 PRMNNMSFWLLPPALSILIMSSMTenGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRSS 161
Cdd:MTH00048  96 PRLNALSAWLLVPSIVFLLLSMCL--GAGVGWTFYPPLSSSLFSSSWGVDFLMFSLHLAGVSSLFGSINFICTIYSAFMT 173

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 633265751 162 GISFdRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:MTH00048 174 NVFS-RTSIILWSYLFTSILLLLSLPVLAAAITMLLFDRNFGSAFFDPLGGGDPVLFQHMFWFFG 237
Ubiquinol_Oxidase_I cd01662
Ubiquinol oxidase subunit I. Ubiquinol oxidase, the terminal oxidase in the respiratory ...
 2-226 8.60e-62

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: 200.50  E-value: 8.60e-62
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   2 IGTLYFIFGAWSGMIGTSLSILIRMELGHP-GSLIGNDQiYNVIVTAHAFIMIFFMVMPtLIGGFGNWLVPLMLGAPDMA 80
Cdd:cd01662   10 IGIMYIITAFVFFLRGGVDALLMRTQLALPgNDFLSPEH-YNQIFTMHGTIMIFLFAMP-LVFGLMNYLVPLQIGARDVA 87

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  81 FPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:cd01662   88 FPRLNALSFWLFLFGGLLLNASLLIGGFPDAGWFAYPPLSGLEYSPGVGVDYWILGLQFSGIGTLLGAINFIVTILKMRA 167

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751 161 SGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:cd01662  168 PGMTLMRMPIFTWTTLVTSILILFAFPVLTAALALLELDRYFGTHFFTNALGGNPMLWQHLFWIFG 233
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I; Cytochrome c oxidase (E.C:7.1.1.9) is a key ...
 1-226 5.99e-50

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: 168.14  E-value: 5.99e-50
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751    1 DIGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPtLIGGFGNWLVPLMLGAPDMA 80
Cdd:pfam00115   1 RIGLLYLVTALVWFLVGGLLGLLIRLQLAFPGLNFLSPLTYNQLRTLHGNLMIFWFATP-FLFGFGNYLVPLMIGARDMA 79

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   81 FPRMNNMSFWLLPPALsILIMSSMteNGPGTGWTVYPPLsstiahsgASVDLAIFSLHLAGISSILGAVNFITTVINMRS 160
Cdd:pfam00115  80 FPRLNALSFWLVVLGA-VLLLASF--GGATTGWTEYPPL--------VGVDLWYIGLLLAGVSSLLGAINFIVTILKRRA 148

                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 633265751  161 SGISFdRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNtsffdpAGGGDPILYQHLFWFFG 226
Cdd:pfam00115 149 PGMTL-RMPLFVWAILATAILILLAFPVLAAALLLLLLDRSLG------AGGGDPLLDQHLFWWFG 207
QoxB TIGR02882
cytochrome aa3 quinol oxidase, subunit I; This family (QoxB) encodes subunit I of the aa3-type ...
 2-226 2.62e-37

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: 137.29  E-value: 2.62e-37
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751    2 IGTLYFIFGAWSGMIGTSLSILIRMELGHPGSLIGNDQIYNVIVTAHAFIMIFFMVMPTLIGgFGNWLVPLMLGAPDMAF 81
Cdd:TIGR02882  53 IGVMYIICAVLMLFRGGIDALLMRAQLTVPDNKFLDAQHYNEIFTTHGVIMIIFMAMPFIIG-LMNIVVPLQIGARDVAF 131

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751   82 PRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLSSTIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRSS 161
Cdd:TIGR02882 132 PVLNALSFWLFFAGAMLFNISFVIGGSPDAGWTNYAPLAGPEFSPGVGVNYYLIALQISGIGTLMTGINFFVTILKMRAP 211

                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 633265751  162 GISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:TIGR02882 212 GMKLMQMPMFTWTTLITTLIIIFAFPVLTVALALMTTDRIFDTAFFTVAHGGMPMLWANLFWIWG 276
PRK15017 PRK15017
cytochrome o ubiquinol oxidase subunit I; Provisional
 41-226 2.77e-33

cytochrome o ubiquinol oxidase subunit I; Provisional


Pssm-ID: 184978  Cd Length: 663  Bit Score: 126.20  E-value: 2.77e-33
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751  41 YNVIVTAHAFIMIFFMVMPTLIGgFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPALSILIMSSMTENGPGTGWTVYPPLS 120
Cdd:PRK15017  99 YDQIFTAHGVIMIFFVAMPFVIG-LMNLVVPLQIGARDVAFPFLNNLSFWFTVVGVILVNVSLGVGEFAQTGWLAYPPLS 177

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 633265751 121 STIAHSGASVDLAIFSLHLAGISSILGAVNFITTVINMRSSGISFDRMPLFVWSVVITAFLLLLSLPVLAGAITMLLTDR 200
Cdd:PRK15017 178 GIEYSPGVGVDYWIWSLQLSGIGTTLTGINFFVTILKMRAPGMTMFKMPVFTWASLCANVLIIASFPILTVTVALLTLDR 257

                        170       180
                 ....*....|....*....|....*.
gi 633265751 201 NFNTSFFDPAGGGDPILYQHLFWFFG 226
Cdd:PRK15017 258 YLGTHFFTNDMGGNMMMYINLIWAWG 283
 
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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