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1FFT

The structure of ubiquinol oxidase from Escherichia coli

Functional Information from GO Data
ChainGOidnamespacecontents
A0004129molecular_functioncytochrome-c oxidase activity
A0005507molecular_functioncopper ion binding
A0005515molecular_functionprotein binding
A0005886cellular_componentplasma membrane
A0006811biological_processmonoatomic ion transport
A0009055molecular_functionelectron transfer activity
A0009060biological_processaerobic respiration
A0009319cellular_componentcytochrome o ubiquinol oxidase complex
A0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
A0015078molecular_functionproton transmembrane transporter activity
A0015453molecular_functionoxidoreduction-driven active transmembrane transporter activity
A0015990biological_processelectron transport coupled proton transport
A0016020cellular_componentmembrane
A0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
A0019646biological_processaerobic electron transport chain
A0020037molecular_functionheme binding
A0022904biological_processrespiratory electron transport chain
A0046872molecular_functionmetal ion binding
A0048039molecular_functionubiquinone binding
A1902600biological_processproton transmembrane transport
B0004129molecular_functioncytochrome-c oxidase activity
B0005507molecular_functioncopper ion binding
B0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
B0016020cellular_componentmembrane
B0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
B0022900biological_processelectron transport chain
C0004129molecular_functioncytochrome-c oxidase activity
C0009055molecular_functionelectron transfer activity
C0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
C0016020cellular_componentmembrane
C0019646biological_processaerobic electron transport chain
C0022904biological_processrespiratory electron transport chain
F0004129molecular_functioncytochrome-c oxidase activity
F0005507molecular_functioncopper ion binding
F0005515molecular_functionprotein binding
F0005886cellular_componentplasma membrane
F0006811biological_processmonoatomic ion transport
F0009055molecular_functionelectron transfer activity
F0009060biological_processaerobic respiration
F0009319cellular_componentcytochrome o ubiquinol oxidase complex
F0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
F0015078molecular_functionproton transmembrane transporter activity
F0015453molecular_functionoxidoreduction-driven active transmembrane transporter activity
F0015990biological_processelectron transport coupled proton transport
F0016020cellular_componentmembrane
F0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
F0019646biological_processaerobic electron transport chain
F0020037molecular_functionheme binding
F0022904biological_processrespiratory electron transport chain
F0046872molecular_functionmetal ion binding
F0048039molecular_functionubiquinone binding
F1902600biological_processproton transmembrane transport
G0004129molecular_functioncytochrome-c oxidase activity
G0005507molecular_functioncopper ion binding
G0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
G0016020cellular_componentmembrane
G0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
G0022900biological_processelectron transport chain
H0004129molecular_functioncytochrome-c oxidase activity
H0009055molecular_functionelectron transfer activity
H0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
H0016020cellular_componentmembrane
H0019646biological_processaerobic electron transport chain
H0022904biological_processrespiratory electron transport chain
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CU A 1003
ChainResidue
AHIS284
AHIS333
AHIS334

site_idAC2
Number of Residues3
DetailsBINDING SITE FOR RESIDUE CU F 1003
ChainResidue
FHIS284
FHIS333
FHIS334

site_idAC3
Number of Residues19
DetailsBINDING SITE FOR RESIDUE HEM A 1001
ChainResidue
APHE103
ATHR104
AHIS106
AGLY107
AMET110
AILE111
AGLY169
ATRP170
AILE417
AHIS421
AILE424
AILE425
AVAL429
APHE468
AARG481
AARG482
APHE73
AARG80
ATYR99

site_idAC4
Number of Residues23
DetailsBINDING SITE FOR RESIDUE HEO A 1002
ChainResidue
ATRP280
AVAL287
AHIS333
AHIS334
AALA356
ATHR359
AGLY360
AGLY395
AGLY398
AVAL399
ALEU401
AHIS411
AASN412
ALEU416
AHIS419
APHE420
AVAL423
AILE424
AARG481
BILE56
BPRO96
BILE99
BILE100

site_idAC5
Number of Residues19
DetailsBINDING SITE FOR RESIDUE HEM F 1001
ChainResidue
FPHE73
FARG80
FTYR99
FPHE103
FTHR104
FHIS106
FGLY107
FMET110
FILE111
FGLY169
FTRP170
FILE417
FHIS421
FILE424
FILE425
FVAL429
FPHE468
FARG481
FARG482

site_idAC6
Number of Residues24
DetailsBINDING SITE FOR RESIDUE HEO F 1002
ChainResidue
FTRP170
FTRP280
FVAL287
FHIS333
FHIS334
FALA356
FTHR359
FGLY360
FGLY395
FGLY398
FVAL399
FLEU401
FHIS411
FASN412
FLEU416
FHIS419
FPHE420
FVAL423
FILE424
FARG481
GILE56
GPRO96
GILE99
GILE100

Functional Information from PROSITE/UniProt
site_idPS00077
Number of Residues55
DetailsCOX1_CUB Heme-copper oxidase catalytic subunit, copper B binding region signature. WAWGHPeVyililpvfgvfseiaatfsrkrlfgytslvwatvcitvlsfivwl..HH
ChainResidueDetails
ATRP280-HIS334

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues54
DetailsTransmembrane: {"description":"Helical; Name=II"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues142
DetailsTopological domain: {"description":"Periplasmic"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues72
DetailsTransmembrane: {"description":"Helical; Name=III"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues48
DetailsTopological domain: {"description":"Cytoplasmic"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues46
DetailsTransmembrane: {"description":"Helical; Name=IV"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues60
DetailsTransmembrane: {"description":"Helical; Name=V"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues70
DetailsTransmembrane: {"description":"Helical; Name=VI"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues72
DetailsTransmembrane: {"description":"Helical; Name=VII"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues28
DetailsTransmembrane: {"description":"Helical; Name=VIII"}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues56
DetailsTransmembrane: {"description":"Helical; Name=IX"}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues62
DetailsTransmembrane: {"description":"Helical; Name=X"}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues64
DetailsTransmembrane: {"description":"Helical; Name=XI"}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues56
DetailsTransmembrane: {"description":"Helical; Name=XII"}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues62
DetailsTransmembrane: {"description":"Helical; Name=XIII"}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"33408407","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"34417297","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"6WTI","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"7CUB","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"7CUW","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"7N9Z","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"34417297","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"7CUW","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"34417297","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"7CUB","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"7CUW","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"7N9Z","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues6
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"PubMed","id":"11017202","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"33408407","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1FFT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"6WTI","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI19
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"11017202","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1FFT","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI20
Number of Residues10
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"11017202","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"33408407","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1FFT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"6WTI","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI21
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"33408407","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"6WTI","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI22
Number of Residues4
DetailsCross-link: {"description":"1'-histidyl-3'-tyrosine (His-Tyr)","evidences":[{"source":"PubMed","id":"34417297","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI23
Number of Residues250
DetailsTransmembrane: {"description":"Helical","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI24
Number of Residues120
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI25
Number of Residues72
DetailsTopological domain: {"description":"Periplasmic","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues23
Detailsa catalytic site defined by CSA, PubMed 11017202, 15598510, 12450405, 16624801, 9256439
ChainResidueDetails
AHIS419
ATHR201
ASER145
AMET79
AASN124
APHE420
APHE103
AGLU286
ATHR149
AHIS284
AHIS421
ALYS362
ATHR204
AASP75
AARG71
ATYR288
AASP135
ATHR211
ATHR359
ASER315
ASER299
AASN142
ATYR61

site_idCSA2
Number of Residues23
Detailsa catalytic site defined by CSA, PubMed 11017202, 15598510, 12450405, 16624801, 9256439
ChainResidueDetails
FHIS419
FTHR201
FSER145
FMET79
FASN124
FPHE420
FPHE103
FGLU286
FTHR149
FHIS284
FHIS421
FLYS362
FTHR204
FASP75
FARG71
FTYR288
FASP135
FTHR211
FTHR359
FSER315
FSER299
FASN142
FTYR61

site_idMCSA1
Number of Residues23
DetailsM-CSA 714
ChainResidueDetails
ATYR61proton shuttle (general acid/base)
ATHR149proton shuttle (general acid/base)
ATHR201proton shuttle (general acid/base)
ATHR204proton shuttle (general acid/base)
ATHR211proton shuttle (general acid/base)
AHIS284metal ligand, modifies pKa
AGLU286proton shuttle (general acid/base)
ATYR288electron shuttle, proton shuttle (general acid/base)
ASER299proton shuttle (general acid/base)
ASER315proton shuttle (general acid/base)
ATHR359proton shuttle (general acid/base)
AARG71electrostatic stabiliser
ALYS362proton shuttle (general acid/base)
AHIS419electron shuttle
APHE420electron shuttle
AHIS421electron shuttle
AASP75electrostatic stabiliser
AMET79electron shuttle
APHE103electron shuttle
AASN124proton shuttle (general acid/base)
AASP135proton shuttle (general acid/base)
AASN142proton shuttle (general acid/base)
ASER145proton shuttle (general acid/base)

site_idMCSA2
Number of Residues23
DetailsM-CSA 714
ChainResidueDetails

239803

PDB entries from 2025-08-06

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