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4TTT

Crystal structure of an O2-tolerant [NiFe]-hydrogenase from Ralstonia eutropha in its as-isolated form - oxidized state 3

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(L)
Uptake hydrogenase large subunit hoxGpolymer60367247.21UniProt (P31891)
Pfam (PF00374)
Ralstonia eutrophaHydrogenlyase,Membrane-bound hydrogenase large subunit
2B
(S)
Uptake hydrogenase small subunit hoxKpolymer33937384.51UniProt (P31892)
Pfam (PF01058)
Pfam (PF14720)
Ralstonia eutrophaHydrogenlyase,Membrane-bound hydrogenase small subunit
3C
(L)
NI-FE OXIDIZED ACTIVE CENTERnon-polymer210.61Chemie (NFV)
4D
(L)
PHOSPHATE IONnon-polymer95.01Chemie (PO4)
5E
(L)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
6F, K, L
(L, S)
CHLORIDE IONnon-polymer35.53Chemie (CL)
7G
(L)
SODIUM IONnon-polymer23.01Chemie (NA)
8H
(S)
IRON/SULFUR CLUSTERnon-polymer351.61Chemie (SF4)
9I
(S)
FE3-S4 CLUSTERnon-polymer295.81Chemie (F3S)
10J
(S)
FE4-S3 CLUSTERnon-polymer319.61Chemie (F4S)
11M, N
(L, S)
waterwater18.0612Chemie (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 molecules10
Total formula weight1426.2
All*Total formula weight106057.9
*Water molecules are not included.

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PDB entries from 2025-07-02

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