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8A6T

Cryo-EM structure of the electron bifurcating Fe-Fe hydrogenase HydABC complex from Thermoanaerobacter kivui in the reduced state

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, D
(A, D)
Electron bifurcating hydrogenase subunit HydA1polymer57163890.72UniProt (A0A097ATG3)Thermoanaerobacter kivui
2B, E
(B, E)
Electron bifurcating hydrogenase subunit HydBpolymer63068279.02UniProt (A0A097ATG4)Thermoanaerobacter kivui
3C, F
(C, F)
Electron bifurcating hydrogenase subunit HydCpolymer17018624.72UniProt (A0A097ATI0)Thermoanaerobacter kivui
4BA, EA, FA, G, J...
(E, A, B, D)
IRON/SULFUR CLUSTERnon-polymer351.614Chemie (SF4)
5H, V
(A, D)
2 IRON/2 SULFUR/5 CARBONYL/2 WATER INORGANIC CLUSTERnon-polymer355.92Chemie (HC1)
6DA, HA, I, P, T...
(E, F, A, B, C...)
FE2/S2 (INORGANIC) CLUSTERnon-polymer175.86Chemie (FES)
7AA, M
(E, B)
FLAVIN MONONUCLEOTIDEnon-polymer456.32Chemie (FMN)
PubChem (23585816)
PubChem (51435500)
PubChem (51435503)
PubChem (15559251)
PubChem (710)
PubChem (8965)
PubChem (643976)
PubChem (5702760)
PubChem (7048779)
PubChem (7048781)
8CA, O
(E, B)
ZINC IONnon-polymer65.42Chemie (ZN)
9GA, S
(E, B)
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATEnon-polymer743.42Chemie (NAP)
PubChem (4412)
PubChem (46936685)
PubChem (90473931)
PubChem (91972139)
PubChem (145946263)
PubChem (153311489)
PubChem (174001641)
PubChem (71717786)
PubChem (5885)
PubChem (165382010)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains6
Total formula weight301588.9
Non-Polymers*Number of molecules28
Total formula weight9220.1
All*Total formula weight310809.0
*Water molecules are not included.

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PDB entries from 2026-05-20

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