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4IUB

Crystal structure of an O2-tolerant [NiFe]-hydrogenase from Ralstonia eutropha in its as-isolated form - oxidized state 1

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(L)
Uptake hydrogenase large subunitpolymer60367247.21UniProt (P31891)
Pfam (PF00374)
Ralstonia eutrophaHydrogenlyase, Membrane-bound hydrogenase large subunit, HOXG
2B
(S)
Uptake hydrogenase small subunitpolymer33937384.51UniProt (P31892)
Pfam (PF01058)
Pfam (PF14720)
Ralstonia eutrophaHydrogenlyase, Membrane-bound hydrogenase small subunit, HOXK
3C
(L)
NI-FE OXIDIZED ACTIVE CENTERnon-polymer210.61Chemie (NFV)
4D
(L)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
5E, F, G, H, I...
(L, S)
PHOSPHATE IONnon-polymer95.06Chemie (PO4)
6J
(S)
IRON/SULFUR CLUSTERnon-polymer351.61Chemie (SF4)
7K
(S)
FE3-S4 CLUSTERnon-polymer295.81Chemie (F3S)
8L
(S)
oxidized [Fe4-S3] clusternon-polymer335.61Chemie (S3F)
9N
(S)
CHLORIDE IONnon-polymer35.51Chemie (CL)
10O, P
(L, S)
waterwater18.0602Chemie (HOH)
Sequence modifications
S: 1 - 317 (UniProt: P31892)
PDBExternal DatabaseDetails
Arg 318-expression tag
Ser 319-expression tag
Ala 320-expression tag
Trp 321-expression tag
Ser 322-expression tag
His 323-expression tag
Pro 324-expression tag
Gln 325-expression tag
Phe 326-expression tag
Glu 327-expression tag
Lys 328-expression tag
Arg 329-expression tag
Ser 330-expression tag
Ala 331-expression tag
Trp 332-expression tag
Ser 333-expression tag
His 334-expression tag
Pro 335-expression tag
Gln 336-expression tag
Phe 337-expression tag
Glu 338-expression tag
Lys 339-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight104631.7
Non-Polymers*Number of molecules12
Total formula weight1823.2
All*Total formula weight106454.9
*Water molecules are not included.

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PDB entries from 2025-07-30

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