Structure of PDB 4ejh Chain A Binding Site BS02

Receptor Information
>4ejh Chain A (length=464) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
GKLPPGPTPLPFIGNYLQLNTEQMYNSLMKISERYGPVFTIHLGPRRVVV
LCGHDAVKEALVDQAEEFSGRGEQATFDWLFKGYGVAFSNGERAKQLRRF
SIATLRGFGVGKRGIEERIQEEAGFLIDALRGTHGANIDPTFFLSRTVSN
VISSIVFGDRFDYEDKEFLSLLRMMLGSFQFTATSTGQLYEMFSSVMKHL
PGPQQQAFKELQGLEDFIAKKVEHNQRTLDPNSPRDFIDSFLIRMQEEEK
NPNTEFYLKNLVMTTLNLFFAGTETVSTTLRYGFLLLMKHPEVEAKVHEE
IDRVIGKNRQPKFEDRAKMPYTEAVIHEIQRFGDMLPMGLAHRVNKDTKF
RDFFLPKGTEVFPMLGSVLRDPRFFSNPRDFNPQHFLDKKGQFKKSDAFV
PFSIGKRYCFGEGLARMELFLFFTTIMQNFRFKSPQSPKDIDVSPKHVGF
ATIPRNYTMSFLPR
Ligand information
Ligand ID0QA
InChIInChI=1S/C10H13N3O2/c1-13(12-15)7-3-5-10(14)9-4-2-6-11-8-9/h2,4,6,8H,3,5,7H2,1H3
InChIKeyFLAQQSHRLBFIEZ-UHFFFAOYSA-N
SMILES
SoftwareSMILES
ACDLabs 12.01O=C(c1cccnc1)CCCN(N=O)C
CACTVS 3.370
OpenEye OEToolkits 1.7.6		CN(CCCC(=O)c1cccnc1)N=O
FormulaC10 H13 N3 O2
Name4-[methyl(nitroso)amino]-1-(pyridin-3-yl)butan-1-one
ChEMBLCHEMBL2311069
DrugBank
ZINCZINC000005239470
PDB chain4ejh Chain A Residue 502 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB4ejh Nicotine and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone binding and access channel in human cytochrome P450 2A6 and 2A13 enzymes.
Resolution2.35 Å
Binding residue
(original residue number in PDB)		F107 F111 F118 N297 F300 A301 T305 F480
Binding residue
(residue number reindexed from 1)		F77 F81 F88 N267 F270 A271 T275 F450
Annotation score1
Binding affinityMOAD: Kd=4.4uM
Enzymatic activity
Catalytic site (original residue number in PDB) T305 F432 C439
Catalytic site (residue number reindexed from 1) T275 F402 C409
Enzyme Commision number 1.14.14.1: unspecific monooxygenase.
Gene Ontology
Molecular Function
GO:0004497 monooxygenase activity
GO:0005506 iron ion binding
GO:0008389 coumarin 7-hydroxylase activity
GO:0008392 arachidonate epoxygenase 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:0020037 heme binding
GO:0046872 metal ion binding
GO:0070330 aromatase activity
Biological Process
GO:0006805 xenobiotic metabolic process
GO:0009804 coumarin metabolic process
GO:0019373 epoxygenase P450 pathway
GO:0046222 aflatoxin metabolic process
Cellular Component
GO:0005737 cytoplasm
GO:0005783 endoplasmic reticulum
GO:0005789 endoplasmic reticulum membrane
GO:0016020 membrane
GO:0043231 intracellular membrane-bounded organelle

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4ejh, PDBe:4ejh, PDBj:4ejh
PDBsum4ejh
PubMed22700965
UniProtQ16696|CP2AD_HUMAN Cytochrome P450 2A13 (Gene Name=CYP2A13)

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