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Conserved domains on  [gi|1402365127|gb|AWU57574|]
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cytochrome c oxidase subunit I, partial (mitochondrion) [Actinopterygii sp. KSA_F55]

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 ...
1-168 1.65e-105

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 MTH00183:

Pssm-ID: 412277  Cd Length: 516  Bit Score: 311.09  E-value: 1.65e-105
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00183   43 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00183  123 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAISQYQTPLFVWAVLITAVLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00183  203 AAGITMLL 210
 
Name Accession Description Interval E-value
COX1 MTH00183
cytochrome c oxidase subunit I; Provisional
1-168 1.65e-105

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177234  Cd Length: 516  Bit Score: 311.09  E-value: 1.65e-105
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00183   43 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00183  123 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAISQYQTPLFVWAVLITAVLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00183  203 AAGITMLL 210
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
1-168 2.31e-88

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: 266.27  E-value: 2.31e-88
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:cd01663    34 QPGSQLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPRLNNLSFWLLPPSLLLLLLSALVEGGA 113
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:cd01663   114 GTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLLSLPVL 193

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:cd01663   194 AGAITMLL 201
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
8-168 3.42e-46

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


Pssm-ID: 223913  Cd Length: 566  Bit Score: 158.23  E-value: 3.42e-46
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   8 DDQIYNVIVTAHAFVMIFFMVMPiMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAG-TGWTV 86
Cdd:COG0843    55 DPQLYNQILTLHGVIMIFFFAMP-AIGGFANYLVPLMIGARDVAFPRLNAISFWLLVVGAILLVTSFFVPGGAAdTGWTA 133
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  87 YPPLAGNLAHaGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLAAGITM 166
Cdd:COG0843   134 YPPLSAISYS-GPGVDLFILGLHLLGIGSLLGAINFIVTILNMRAPGMTMMKMPLFTWSILITAILILLAFPVLAAALTM 212

                  ..
gi 1402365127 167 LL 168
Cdd:COG0843   213 LL 214
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I;
8-168 9.24e-30

Cytochrome C and Quinol oxidase polypeptide I;


Pssm-ID: 395065  Cd Length: 434  Bit Score: 112.27  E-value: 9.24e-30
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   8 DDQIYNVIVTAHAFVMIFFMVMPiMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASsgVEAGAGTGWTVY 87
Cdd:pfam00115  33 DPLTYNQLRTLHGNLMIFGFATP-FIFGFGNYLVPLMIGARDMAFPRLNALSFWLVVLGAVLLLAS--FFGGATTGWTEY 109
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  88 PPLAGnlahagasVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLAAGITML 167
Cdd:pfam00115 110 PPLTG--------VDLWYLGLLLAGVGSLLGAINFIVTILKRRAPGMYLSRMPLFVWAILATAILILLAFPVLAAALLLL 181

                  .
gi 1402365127 168 L 168
Cdd:pfam00115 182 L 182
 
Name Accession Description Interval E-value
COX1 MTH00183
cytochrome c oxidase subunit I; Provisional
1-168 1.65e-105

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177234  Cd Length: 516  Bit Score: 311.09  E-value: 1.65e-105
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00183   43 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00183  123 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAISQYQTPLFVWAVLITAVLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00183  203 AAGITMLL 210
COX1 MTH00103
cytochrome c oxidase subunit I; Validated
1-168 1.31e-104

cytochrome c oxidase subunit I; Validated


Pssm-ID: 177165  Cd Length: 513  Bit Score: 308.73  E-value: 1.31e-104
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00103   43 QPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSMVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00103  123 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTIINMKPPAMSQYQTPLFVWSVLITAVLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00103  203 AAGITMLL 210
COX1 MTH00153
cytochrome c oxidase subunit I; Provisional
1-168 1.69e-95

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177210  Cd Length: 511  Bit Score: 285.22  E-value: 1.69e-95
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00153   41 QPGSLIGDDQIYNVIVTAHAFIMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSLTLLLSSSMVESGA 120
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00153  121 GTGWTVYPPLSSNIAHSGASVDLAIFSLHLAGISSILGAINFITTIINMRSKGMTLDRMPLFVWSVLITAILLLLSLPVL 200

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00153  201 AGAITMLL 208
COX1 MTH00116
cytochrome c oxidase subunit I; Provisional
1-168 2.21e-95

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177177  Cd Length: 515  Bit Score: 285.06  E-value: 2.21e-95
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00116   43 QPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSTVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00116  123 GTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGAINFITTCINMKPPAMSQYQTPLFVWSVLITAVLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00116  203 AAGITMLL 210
COX1 MTH00167
cytochrome c oxidase subunit I; Provisional
1-168 1.08e-91

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177222  Cd Length: 512  Bit Score: 275.79  E-value: 1.08e-91
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00167   43 QPGSLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSLLLLLASSGVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00167  123 GTGWTVYPPLAGNLAHAGASVDLAIFSLHLAGVSSILGSINFITTIINMKPPGITQYQTPLFVWSILVTTILLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00167  203 AAAITMLL 210
COX1 MTH00077
cytochrome c oxidase subunit I; Provisional
1-168 1.51e-88

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214419  Cd Length: 514  Bit Score: 267.58  E-value: 1.51e-88
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00077   43 QPGTLLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00077  123 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGVSSILGAINFITTSINMKPPSMSQYQTPLFVWSVLITAVLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00077  203 AAGITMLL 210
Cyt_c_Oxidase_I cd01663
Cytochrome C oxidase subunit I. Cytochrome c oxidase (CcO), the terminal oxidase in the ...
1-168 2.31e-88

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: 266.27  E-value: 2.31e-88
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:cd01663    34 QPGSQLGNDQLYNVIVTAHALIMIFFMVMPALIGGFGNWLVPLMIGAPDMAFPRLNNLSFWLLPPSLLLLLLSALVEGGA 113
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:cd01663   114 GTGWTVYPPLSSILAHSGPSVDLAIFSLHLAGISSILGAINFITTIFNMRAPGMTLEKMPLFVWSVLITAFLLLLSLPVL 193

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:cd01663   194 AGAITMLL 201
COX1 MTH00142
cytochrome c oxidase subunit I; Provisional
1-168 2.31e-83

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214431  Cd Length: 511  Bit Score: 254.26  E-value: 2.31e-83
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00142   41 QPGSLLGDDQLYNVIVTAHAFVMIFFMVMPVMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPALLLLLSSAAVESGA 120
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00142  121 GTGWTVYPPLSSNLAHSGGSVDLAIFSLHLAGVSSILGAINFITTVINMRAGGMKFERVPLFVWSVKITAILLLLSLPVL 200

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00142  201 AGAITMLL 208
COX1 MTH00223
cytochrome c oxidase subunit I; Provisional
1-168 2.26e-82

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177260  Cd Length: 512  Bit Score: 251.82  E-value: 2.26e-82
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00223   40 QPGALLGDDQLYNVIVTAHAFVMIFFLVMPMMIGGFGNWLVPLMLGAPDMAFPRLNNMSFWLLPPSLYLLLSSSAVESGV 119
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00223  120 GTGWTVYPPLSSNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTIINMRSPGMQLERLPLFVWSVKVTAFLLLLSLPVL 199

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00223  200 AGAITMLL 207
COX1 MTH00037
cytochrome c oxidase subunit I; Provisional
1-168 1.33e-74

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177112  Cd Length: 517  Bit Score: 232.03  E-value: 1.33e-74
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00037   43 QPGSLLQDDQIYNVIVTAHALVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLIPPSFLLLLASAGVESGA 122
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00037  123 GTGWTIYPPLSSNIAHAGGSVDLAIFSLHLAGASSILASINFITTIINMRTPGMTFDRLPLFVWSVFITAFLLLLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00037  203 AGAITMLL 210
COX1 MTH00007
cytochrome c oxidase subunit I; Validated
1-168 1.62e-71

cytochrome c oxidase subunit I; Validated


Pssm-ID: 133649  Cd Length: 511  Bit Score: 223.63  E-value: 1.62e-71
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00007   40 QPGAFLGSDQLYNTIVTAHAFLMIFFLVMPVFIGGFGNWLVPLMLGAPDMAFPRLNNMSFWLLPPALILLVSSAAVEKGV 119
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00007  120 GTGWTVYPPLASNLAHAGPSVDLAIFSLHLAGVSSILGAINFITTVINMRWKGLRLERIPLFVWAVVITVVLLLLSLPVL 199

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00007  200 AGAITMLL 207
COX1 MTH00182
cytochrome c oxidase subunit I; Provisional
2-168 1.73e-68

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 214451  Cd Length: 525  Bit Score: 216.23  E-value: 1.73e-68
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   2 PGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAG 81
Cdd:MTH00182   46 PGAMLGDDHLYNVIVTAHAFIMIFFLVMPVMIGGFGNWLVPLYIGAPDMAFPRLNNISFWLLPPALILLLGSAFVEQGAG 125
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  82 TGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLA 161
Cdd:MTH00182  126 TGWTVYPPLSSIQAHSGGAVDMAIFSLHLAGVSSILGAINFITTIFNMRAPGVTFNRLPLFVWSILITAFLLLLSLPVLA 205

                  ....*..
gi 1402365127 162 AGITMLL 168
Cdd:MTH00182  206 GAITMLL 212
COX1 MTH00184
cytochrome c oxidase subunit I; Provisional
2-168 6.80e-68

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177235  Cd Length: 519  Bit Score: 214.69  E-value: 6.80e-68
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   2 PGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAG 81
Cdd:MTH00184   46 PGSMLGDDHLYNVIVTAHAFVMIFFLVMPVMIGGFGNWFVPLYIGAPDMAFPRLNNISFWLLPPALTLLLGSAFVEQGAG 125
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  82 TGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLA 161
Cdd:MTH00184  126 TGWTVYPPLSSIQAHSGGSVDMAIFSLHLAGISSILGAMNFITTIFNMRAPGITMDRMPLFVWSILVTTFLLLLSLPVLA 205

                  ....*..
gi 1402365127 162 AGITMLL 168
Cdd:MTH00184  206 GAITMLL 212
COX1 MTH00026
cytochrome c oxidase subunit I; Provisional
2-168 1.23e-61

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 164599  Cd Length: 534  Bit Score: 198.70  E-value: 1.23e-61
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   2 PGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAG 81
Cdd:MTH00026   45 PGSMLGDDHLYNVIVTAHAFVMIFFLVMPTMIGGFGNWFVPLMIGAPDMAFPRLNNISFWLLPPALFLLLGSSLVEQGAG 124
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  82 TGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLA 161
Cdd:MTH00026  125 TGWTVYPPLASIQAHSGGSVDMAIFSLHLAGLSSILGAMNFITTVMNMRTPGMTMSRIPLFVWSVFITAILLLLSLPVLA 204

                  ....*..
gi 1402365127 162 AGITMLL 168
Cdd:MTH00026  205 GAITMLL 211
COX1 MTH00079
cytochrome c oxidase subunit I; Provisional
1-168 6.93e-61

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177148  Cd Length: 508  Bit Score: 196.05  E-value: 6.93e-61
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:MTH00079   44 KPGLLLGNGQLYNSVITAHAILMIFFMVMPSMIGGFGNWMLPLMLGAPDMSFPRLNNLSFWLLPTSLFLILDSCFVDMGP 123
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAgNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:MTH00079  124 GTSWTVYPPLS-TLGHPGSSVDLAIFSLHCAGISSILGGINFMVTTKNLRSSSISLEHMSLFVWTVFVTVFLLVLSLPVL 202

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:MTH00079  203 AGAITMLL 210
Heme_Cu_Oxidase_I cd00919
Heme-copper oxidase subunit I. Heme-copper oxidases are transmembrane protein complexes in ...
1-168 2.36e-52

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: 172.72  E-value: 2.36e-52
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   1 QPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPlMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGA 80
Cdd:cd00919    32 TPGSLFLDPQLYNQLVTAHGVIMIFFFVMPAIFGGFGNLLPP-LIGARDLAFPRLNNLSFWLFPPGLLLLLSSVLVGGGA 110
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  81 GTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVL 160
Cdd:cd00919   111 GTGWTFYPPLSTLSYSSGVGVDLAILGLHLAGVSSILGAINFITTILNMRAPGMTLDKMPLFVWSVLVTAILLLLALPVL 190

                  ....*...
gi 1402365127 161 AAGITMLL 168
Cdd:cd00919   191 AAALVMLL 198
CyoB COG0843
Heme/copper-type cytochrome/quinol oxidase, subunit 1 [Energy production and conversion];
8-168 3.42e-46

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


Pssm-ID: 223913  Cd Length: 566  Bit Score: 158.23  E-value: 3.42e-46
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   8 DDQIYNVIVTAHAFVMIFFMVMPiMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAG-TGWTV 86
Cdd:COG0843    55 DPQLYNQILTLHGVIMIFFFAMP-AIGGFANYLVPLMIGARDVAFPRLNAISFWLLVVGAILLVTSFFVPGGAAdTGWTA 133
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  87 YPPLAGNLAHaGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLAAGITM 166
Cdd:COG0843   134 YPPLSAISYS-GPGVDLFILGLHLLGIGSLLGAINFIVTILNMRAPGMTMMKMPLFTWSILITAILILLAFPVLAAALTM 212

                  ..
gi 1402365127 167 LL 168
Cdd:COG0843   213 LL 214
Ubiquinol_Oxidase_I cd01662
Ubiquinol oxidase subunit I. Ubiquinol oxidase, the terminal oxidase in the respiratory ...
12-149 5.19e-40

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: 140.79  E-value: 5.19e-40
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  12 YNVIVTAHAFVMIFFMVMPIMIGgFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLA 91
Cdd:cd01662    49 YNQIFTMHGTIMIFLFAMPLVFG-LMNYLVPLQIGARDVAFPRLNALSFWLFLFGGLLLNASLLIGGFPDAGWFAYPPLS 127
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1402365127  92 GNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLIT 149
Cdd:cd01662   128 GLEYSPGVGVDYWILGLQFSGIGTLLGAINFIVTILKMRAPGMTLMRMPIFTWTTLVT 185
COX1 MTH00048
cytochrome c oxidase subunit I; Provisional
11-168 1.25e-38

cytochrome c oxidase subunit I; Provisional


Pssm-ID: 177123  Cd Length: 511  Bit Score: 137.12  E-value: 1.25e-38
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  11 IYNVIVTAHAFVMIFFMVMPIMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASsgVEAGAGTGWTVYPPL 90
Cdd:MTH00048   54 VYNFLITNHGIIMIFFFLMPVLIGGFGNYLLPLLLGLSDLNLPRLNALSAWLLVPSIVFLLLS--MCLGAGVGWTFYPPL 131
                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1402365127  91 AGNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSqYQTPLFVWAVLITAVLLLLSLPVLAAGITMLL 168
Cdd:MTH00048  132 SSSLFSSSWGVDFLMFSLHLAGVSSLFGSINFICTIYSAFMTNVF-SRTSIILWSYLFTSILLLLSLPVLAAAITMLL 208
PRK15017 PRK15017
cytochrome o ubiquinol oxidase subunit I; Provisional
12-149 2.33e-31

cytochrome o ubiquinol oxidase subunit I; Provisional


Pssm-ID: 184978  Cd Length: 663  Bit Score: 118.11  E-value: 2.33e-31
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  12 YNVIVTAHAFVMIFFMVMPIMIGgFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLA 91
Cdd:PRK15017   99 YDQIFTAHGVIMIFFVAMPFVIG-LMNLVVPLQIGARDVAFPFLNNLSFWFTVVGVILVNVSLGVGEFAQTGWLAYPPLS 177
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1402365127  92 GNLAHAGASVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLIT 149
Cdd:PRK15017  178 GIEYSPGVGVDYWIWSLQLSGIGTTLTGINFFVTILKMRAPGMTMFKMPVFTWASLCA 235
COX1 pfam00115
Cytochrome C and Quinol oxidase polypeptide I;
8-168 9.24e-30

Cytochrome C and Quinol oxidase polypeptide I;


Pssm-ID: 395065  Cd Length: 434  Bit Score: 112.27  E-value: 9.24e-30
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127   8 DDQIYNVIVTAHAFVMIFFMVMPiMIGGFGNWLVPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASsgVEAGAGTGWTVY 87
Cdd:pfam00115  33 DPLTYNQLRTLHGNLMIFGFATP-FIFGFGNYLVPLMIGARDMAFPRLNALSFWLVVLGAVLLLAS--FFGGATTGWTEY 109
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1402365127  88 PPLAGnlahagasVDLTIFSLHLAGISSILGAINFITTILNMKPPATSQYQTPLFVWAVLITAVLLLLSLPVLAAGITML 167
Cdd:pfam00115 110 PPLTG--------VDLWYLGLLLAGVGSLLGAINFIVTILKRRAPGMYLSRMPLFVWAILATAILILLAFPVLAAALLLL 181

                  .
gi 1402365127 168 L 168
Cdd:pfam00115 182 L 182
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.19
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
  • Marchler-Bauer A et al. (2015), "CDD: NCBI's conserved domain database.", Nucleic Acids Res.43(D)222-6.
  • Marchler-Bauer A et al. (2011), "CDD: a Conserved Domain Database for the functional annotation of proteins.", Nucleic Acids Res.39(D)225-9.
  • Marchler-Bauer A, Bryant SH (2004), "CD-Search: protein domain annotations on the fly.", Nucleic Acids Res.32(W)327-331.
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