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3B9J

Structure of Xanthine Oxidase with 2-hydroxy-6-methylpurine

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, D
(A, I)
xanthine oxidasepolymer21924036.82UniProt (P80457)
Pfam (PF00111)
Pfam (PF01799)
Bos taurus (cattle)XO; Xanthine oxidoreductase
2B, E
(B, J)
xanthine oxidasepolymer35039005.22UniProt (P80457)
Pfam (PF00941)
Pfam (PF03450)
Bos taurus (cattle)XO; Xanthine oxidoreductase
3C, F
(C, K)
xanthine oxidasepolymer76383964.42UniProt (P80457)
Pfam (PF01315)
Pfam (PF02738)
Pfam (PF20256)
Bos taurus (cattle)XO; Xanthine oxidoreductase
4G, H, M, N
(A, I)
FE2/S2 (INORGANIC) CLUSTERnon-polymer175.84Chemie (FES)
5I, O
(B, J)
FLAVIN-ADENINE DINUCLEOTIDEnon-polymer785.52Chemie (FAD)
6J
(C)
CALCIUM IONnon-polymer40.11Chemie (CA)
PubChem (271)
7K, P
(C, K)
6-methyl-3,9-dihydro-2H-purin-2-onenon-polymer150.12Chemie (290)
8L, Q
(C, K)
Molybdopterin hydoxy-oxo-thiol-molybdenumnon-polymer555.42Chemie (ZXF)
9R, S, T, U, V...
(A, B, C, I, J...)
waterwater18.0861Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains6
Total formula weight294012.7
Non-Polymers*Number of molecules11
Total formula weight3725.4
All*Total formula weight297738.1
*Water molecules are not included.

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PDB entries from 2026-09-23

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