Structure of PDB 3nxu Chain B

Receptor sequence
>3nxuB (length=457) Species: 9606 (Homo sapiens) [Search protein sequence]
SHGLFKKLGIPGPTPLPFLGNILSYHKGFCMFDMECHKKYGKVWGFYDGQ
QPVLAITDPDMIKTVLVKECYSVFTNRRPFGPVGFMKSAISIAEDEEWKR
LRSLLSPTFTSGKLKEMVPIIAQYGDVLVRNLRREAETGKPVTLKDVFGA
YSMDVITSTSFGVNIDSLNNPQDPFVENTKKLLRFDFLDPFFLSITVFPF
LIPILEVLNICVFPREVTNFLRKSVKRMKESRLEDTRVDFLQLMIDSQNA
LSDLELVAQSIIFIFAGYETTSSVLSFIMYELATHPDVQQKLQEEIDAVL
PNKAPPTYDTVLQMEYLDMVVNETLRLFPIAMRLERVCKKDVEINGMFIP
KGVVVMIPSYALHRDPKYWTEPEKFLPERFSKKNKDNIDPYIYTPFGSGP
RNCIGMRFALMNMKLALIRVLQNFSFKPCKETQIPLKLSLGGLLQPEKPV
VLKVESR
3D structure
PDB3nxu Structure and mechanism of the complex between cytochrome P4503A4 and ritonavir.
ChainB
Resolution2.0 Å
3D
structure
Catalytic site residues are labeled in the structure
[Spin on]
[Spin off]
[Reset orientation]

[High quality]
[Low quality]

[White background]
[Black background]

[Download]
[Download structure with residue number starting from 1]
Enzymatic activity
Catalytic site (original residue number in PDB) T309 F435 C442
Catalytic site (residue number reindexed from 1) T270 F396 C403
Enzyme Commision number 1.14.14.1: unspecific monooxygenase.
1.14.14.55: quinine 3-monooxygenase.
1.14.14.56: 1,8-cineole 2-exo-monooxygenase.
1.14.14.73: albendazole monooxygenase (sufoxide-forming).
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 HEM B R105 S119 W126 F302 A305 I369 R375 P434 F435 R440 C442 I443 A448 M452 R77 S91 W98 F263 A266 I330 R336 P395 F396 R401 C403 I404 A409 M413
BS02 RIT B R105 F108 S119 L210 L211 F213 F241 I301 F304 A305 I369 A370 R372 L373 E374 G481 R77 F80 S91 L182 L183 F185 F213 I262 F265 A266 I330 A331 R333 L334 E335 G442 BindingDB: IC50=100nM,Ki=170nM
Gene Ontology
Molecular Function
GO:0004497 monooxygenase activity
GO:0005496 steroid binding
GO:0005506 iron ion binding
GO:0005515 protein binding
GO:0008395 steroid hydroxylase activity
GO:0008401 retinoic acid 4-hydroxylase activity
GO:0016491 oxidoreductase activity
GO:0016705 oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen
GO:0016712 oxidoreductase 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
GO:0019825 oxygen binding
GO:0019899 enzyme binding
GO:0020037 heme binding
GO:0030343 vitamin D3 25-hydroxylase activity
GO:0034875 caffeine oxidase activity
GO:0046872 metal ion binding
GO:0050591 quinine 3-monooxygenase activity
GO:0050649 testosterone 6-beta-hydroxylase activity
GO:0062181 1-alpha,25-dihydroxyvitamin D3 23-hydroxylase activity
GO:0062187 anandamide 8,9 epoxidase activity
GO:0062188 anandamide 11,12 epoxidase activity
GO:0062189 anandamide 14,15 epoxidase activity
GO:0070330 aromatase activity
GO:0070576 vitamin D 24-hydroxylase activity
GO:0101020 estrogen 16-alpha-hydroxylase activity
GO:0101021 estrogen 2-hydroxylase activity
GO:0102320 1,8-cineole 2-exo-monooxygenase activity
Biological Process
GO:0002933 lipid hydroxylation
GO:0006629 lipid metabolic process
GO:0006631 fatty acid metabolic process
GO:0006694 steroid biosynthetic process
GO:0006706 steroid catabolic process
GO:0006805 xenobiotic metabolic process
GO:0008202 steroid metabolic process
GO:0008203 cholesterol metabolic process
GO:0008209 androgen metabolic process
GO:0008210 estrogen metabolic process
GO:0009822 alkaloid catabolic process
GO:0016098 monoterpenoid metabolic process
GO:0036378 calcitriol biosynthetic process from calciol
GO:0042178 xenobiotic catabolic process
GO:0042359 vitamin D metabolic process
GO:0042369 vitamin D catabolic process
GO:0042572 retinol metabolic process
GO:0042573 retinoic acid metabolic process
GO:0042759 long-chain fatty acid biosynthetic process
GO:0046222 aflatoxin metabolic process
GO:0070989 oxidative demethylation
Cellular Component
GO:0005737 cytoplasm
GO:0005783 endoplasmic reticulum
GO:0005789 endoplasmic reticulum membrane
GO:0016020 membrane
GO:0043231 intracellular membrane-bounded organelle

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:3nxu, PDBe:3nxu, PDBj:3nxu
PDBsum3nxu
PubMed20937904
UniProtP08684|CP3A4_HUMAN Cytochrome P450 3A4 (Gene Name=CYP3A4)

[Back to BioLiP]