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1HKO

NMR structure of bovine cytochrome b5

Replaces:  1WDB
Functional Information from GO Data
ChainGOidnamespacecontents
A0020037molecular_functionheme binding
Functional Information from PDB Data
site_idAC1
Number of Residues17
DetailsBINDING SITE FOR RESIDUE HEM A 105
ChainResidue
ALEU27
AASN61
APHE62
AVAL65
AHIS67
ASER68
AALA71
ALEU74
ASER75
ALEU29
APHE39
AHIS43
APRO44
AVAL49
AGLU52
AGLN53
AALA58

Functional Information from PROSITE/UniProt
site_idPS00191
Number of Residues8
DetailsCYTOCHROME_B5_1 Cytochrome b5 family, heme-binding domain signature. FLEEHPGG
ChainResidueDetails
APHE39-GLY46

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues76
DetailsDomain: {"description":"Cytochrome b5 heme-binding","evidences":[{"source":"PROSITE-ProRule","id":"PRU00279","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsBinding site: {"description":"axial binding residue","evidences":[{"source":"PROSITE-ProRule","id":"PRU00279","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"15299727","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsModified residue: {"description":"N-acetylalanine","evidences":[{"source":"PubMed","id":"2752049","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"4030743","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues3
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"UniProtKB","id":"P56395","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

244693

PDB entries from 2025-11-12

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