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4EJI

Human Cytochrome P450 2A13 in complex with two molecules of 4-(methylnitrosamino)-1-(3-puridyl)-1-butanone

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Cytochrome P450 2A13polymer47654804.81UniProt (Q16696)
Pfam (PF00067)
Homo sapiens (human)CYPIIA13
2B
(A)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.51Chemie (HEM)
3C, D
(A)
4-[methyl(nitroso)amino]-1-(pyridin-3-yl)butan-1-onenon-polymer207.22Chemie (0QA)
4E
(A)
waterwater18.069Chemie (HOH)
Sequence modifications
A: 31 - 494 (UniProt: Q16696)
PDBExternal DatabaseDetails
Met 23-initiating methionine
Ala 24-expression tag
Lys 25-expression tag
Lys 26-expression tag
Thr 27-expression tag
Ser 28-expression tag
Ser 29-expression tag
Lys 30-expression tag
His 495-expression tag
His 496-expression tag
His 497-expression tag
His 498-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight54804.8
Non-Polymers*Number of molecules3
Total formula weight1030.9
All*Total formula weight55835.7
*Water molecules are not included.

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PDB entries from 2025-12-24

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