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6KOE

X-ray Structure of the proton-pumping cytochrome aa3-600 menaquinol oxidase from Bacillus subtilis

Functional Information from GO Data
ChainGOidnamespacecontents
A0004129molecular_functioncytochrome-c oxidase activity
A0005507molecular_functioncopper ion binding
A0005886cellular_componentplasma membrane
A0006119biological_processoxidative phosphorylation
A0006811biological_processmonoatomic ion transport
A0009060biological_processaerobic respiration
A0015990biological_processelectron transport coupled proton transport
A0016020cellular_componentmembrane
A0016491molecular_functionoxidoreductase activity
A0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
A0020037molecular_functionheme binding
A0022904biological_processrespiratory electron transport chain
A0042773biological_processATP synthesis coupled electron transport
A0046872molecular_functionmetal ion binding
A1902600biological_processproton transmembrane transport
B0004129molecular_functioncytochrome-c oxidase activity
B0005507molecular_functioncopper ion binding
B0005886cellular_componentplasma membrane
B0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
B0016020cellular_componentmembrane
B0016491molecular_functionoxidoreductase activity
B0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
B0022900biological_processelectron transport chain
B0022904biological_processrespiratory electron transport chain
B0042773biological_processATP synthesis coupled electron transport
B0045121cellular_componentmembrane raft
B0055085biological_processtransmembrane transport
B0098803cellular_componentrespiratory chain complex
B1902600biological_processproton transmembrane transport
C0004129molecular_functioncytochrome-c oxidase activity
C0005886cellular_componentplasma membrane
C0009055molecular_functionelectron transfer activity
C0009060biological_processaerobic respiration
C0016020cellular_componentmembrane
C0016491molecular_functionoxidoreductase activity
C0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
C0019646biological_processaerobic electron transport chain
C0022904biological_processrespiratory electron transport chain
C0042773biological_processATP synthesis coupled electron transport
C1902600biological_processproton transmembrane transport
D0016020cellular_componentmembrane
E0004129molecular_functioncytochrome-c oxidase activity
E0005507molecular_functioncopper ion binding
E0005886cellular_componentplasma membrane
E0006119biological_processoxidative phosphorylation
E0006811biological_processmonoatomic ion transport
E0009060biological_processaerobic respiration
E0015990biological_processelectron transport coupled proton transport
E0016020cellular_componentmembrane
E0016491molecular_functionoxidoreductase activity
E0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
E0020037molecular_functionheme binding
E0022904biological_processrespiratory electron transport chain
E0042773biological_processATP synthesis coupled electron transport
E0046872molecular_functionmetal ion binding
E1902600biological_processproton transmembrane transport
F0004129molecular_functioncytochrome-c oxidase activity
F0005507molecular_functioncopper ion binding
F0005886cellular_componentplasma membrane
F0009486molecular_functioncytochrome bo3 ubiquinol oxidase activity
F0016020cellular_componentmembrane
F0016491molecular_functionoxidoreductase activity
F0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
F0022900biological_processelectron transport chain
F0022904biological_processrespiratory electron transport chain
F0042773biological_processATP synthesis coupled electron transport
F0045121cellular_componentmembrane raft
F0055085biological_processtransmembrane transport
F0098803cellular_componentrespiratory chain complex
F1902600biological_processproton transmembrane transport
G0004129molecular_functioncytochrome-c oxidase activity
G0005886cellular_componentplasma membrane
G0009055molecular_functionelectron transfer activity
G0009060biological_processaerobic respiration
G0016020cellular_componentmembrane
G0016491molecular_functionoxidoreductase activity
G0016682molecular_functionoxidoreductase activity, acting on diphenols and related substances as donors, oxygen as acceptor
G0019646biological_processaerobic electron transport chain
G0022904biological_processrespiratory electron transport chain
G0042773biological_processATP synthesis coupled electron transport
G1902600biological_processproton transmembrane transport
H0016020cellular_componentmembrane
Functional Information from PDB Data
site_idAC1
Number of Residues27
Detailsbinding site for residue HEA A 1001
ChainResidue
APHE69
AGLY103
AMET106
AILE107
AGLY165
ATRP166
ATYR410
APHE416
AHIS417
ALEU420
AILE421
AGLY72
AVAL425
AGLN467
AARG477
AARG478
AALA499
AMET502
AGLY503
APHE506
AVAL73
ALEU76
AARG79
ATYR95
APHE99
ATHR100
AHIS102

site_idAC2
Number of Residues22
Detailsbinding site for residue HEA A 1002
ChainResidue
ATRP166
ATRP276
AVAL283
ATYR284
AILE287
AHIS329
AHIS330
ATHR348
ASER352
AGLY391
AGLY394
ALEU397
AALA398
AASP403
AHIS407
ALEU412
AHIS415
APHE416
AVAL419
ALEU420
BPHE36
BILE78

site_idAC3
Number of Residues3
Detailsbinding site for residue CU A 1003
ChainResidue
AHIS280
AHIS329
AHIS330

site_idAC4
Number of Residues9
Detailsbinding site for residue HQO A 1004
ChainResidue
AARG70
AVAL73
AASP74
AHIS94
AGLU97
AILE98
ATHR101
APHE156
ASER161

site_idAC5
Number of Residues24
Detailsbinding site for residue HEA E 1001
ChainResidue
EPHE69
EGLY72
EMET78
EARG79
ETYR95
EPHE99
ETHR100
EHIS102
EGLY103
EMET106
EGLY165
ETRP166
ETYR410
EPHE416
EHIS417
ELEU420
EILE421
EGLN467
EARG477
EARG478
EALA499
EMET502
EGLY503
EPHE506

site_idAC6
Number of Residues23
Detailsbinding site for residue HEA E 1002
ChainResidue
EALA398
EASP403
EHIS407
ELEU412
EHIS415
EPHE416
EVAL419
ELEU420
FPHE36
ETRP166
ETRP276
EVAL283
ETYR284
EILE287
EHIS329
EHIS330
ETHR348
ESER352
EGLY356
EILE359
EGLY391
EGLY394
ELEU397

site_idAC7
Number of Residues3
Detailsbinding site for residue CU E 1003
ChainResidue
EHIS280
EHIS329
EHIS330

site_idAC8
Number of Residues9
Detailsbinding site for residue HQO E 1004
ChainResidue
ELEU17
EARG70
EVAL73
EASP74
EHIS94
EGLU97
EILE98
EPHE156
ESER161

Functional Information from PROSITE/UniProt
site_idPS00077
Number of Residues55
DetailsCOX1_CUB Heme-copper oxidase catalytic subunit, copper B binding region signature. WIWGHPeVyivilpafgifseiissfarkqlfgykamvgsiiaisvlsflvwt..HH
ChainResidueDetails
ATRP276-HIS330

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI2
Number of Residues838
DetailsTransmembrane: {"description":"Helical","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues242
DetailsTopological domain: {"description":"Cytoplasmic","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues228
DetailsTopological domain: {"description":"Extracellular","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues6
DetailsBinding site: {"description":"axial binding residue","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues8
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues4
DetailsCross-link: {"description":"1'-histidyl-3'-tyrosine (His-Tyr)","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

247947

PDB entries from 2026-01-21

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