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1SUO

Structure of mammalian cytochrome P450 2B4 with bound 4-(4-chlorophenyl)imidazole

Functional Information from GO Data
ChainGOidnamespacecontents
A0004497molecular_functionmonooxygenase activity
A0005506molecular_functioniron ion binding
A0005737cellular_componentcytoplasm
A0005783cellular_componentendoplasmic reticulum
A0005789cellular_componentendoplasmic reticulum membrane
A0006082biological_processorganic acid metabolic process
A0006805biological_processxenobiotic metabolic process
A0008392molecular_functionarachidonate epoxygenase activity
A0016020cellular_componentmembrane
A0016491molecular_functionoxidoreductase activity
A0016705molecular_functionoxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen
A0016712molecular_functionoxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen
A0019373biological_processepoxygenase P450 pathway
A0020037molecular_functionheme binding
A0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues20
DetailsBINDING SITE FOR RESIDUE HEM A 500
ChainResidue
AARG98
AILE363
AHIS369
ALEU392
APRO428
APHE429
ASER430
AARG434
ACYS436
AGLY438
AALA442
AVAL113
ACPZ600
ATRP121
AARG125
AALA298
AGLY299
ATHR302
ATHR303
ATHR306

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CPZ A 600
ChainResidue
AILE101
APHE297
AALA298
AGLU301
ATHR302
AHEM500

Functional Information from PROSITE/UniProt
site_idPS00086
Number of Residues10
DetailsCYTOCHROME_P450 Cytochrome P450 cysteine heme-iron ligand signature. FSlGKRICLG
ChainResidueDetails
APHE429-GLY438

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsBinding site: {"description":"axial binding residue"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine; by PKA","evidences":[{"source":"UniProtKB","id":"P00176","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1akd
ChainResidueDetails
ATHR302
AGLU301

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PDB entries from 2025-08-27

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