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Cryo-EM structure of the electron bifurcating transhydrogenase StnABC complex from Sporomusa Ovata (state 2)

Electron Microscopy
3Å resolution
PDB entry 8oh5 coloured by chain, front view.
PDB entry 8oh5 coloured by chain, side view.
PDB entry 8oh5 coloured by chain, top view.
Source organism: Sporomusa ovata DSM 2662
Assembly composition:
hetero dodecamer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero dodecamer
Accessible surface area: 293753.98 Å2
Buried surface area: 73471.62 Å2
Dissociation area: 5,643.33 Å2
Dissociation energy (ΔGdiss): 3.91 kcal/mol
Dissociation entropy (TΔSdiss): 55.55 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-228391

Macromolecules

NAD-dependent formate dehydrogenase gamma subunit
Chains: A, D, G, J
Length: 178 amino acids
Theoretical weight: 18.97 KDa
Source organism: Sporomusa ovata DSM 2662
UniProt:
  • Canonical: A0A0U1KYW8 (Residues: 1-178; Coverage: 100%)
Gene name: SpAn4DRAFT_2935
Pfam: Thioredoxin-like [2Fe-2S] ferredoxin
NAD-dependent formate dehydrogenase gamma subunit in PDB entry 8oh5, assembly 1, front view.
NAD-dependent formate dehydrogenase gamma subunit in PDB entry 8oh5, assembly 1, side view.
NAD-dependent formate dehydrogenase gamma subunit in PDB entry 8oh5, assembly 1, top view.
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4Fe-4S ferredoxin-type domain-containing protein
Chains: B, E, H, K
Length: 584 amino acids
Theoretical weight: 63.57 KDa
Source organism: Sporomusa ovata DSM 2662
UniProt:
  • Canonical: A0A0U1KYM9 (Residues: 1-584; Coverage: 100%)
Gene name: SpAn4DRAFT_2936
Pfam:
4Fe-4S ferredoxin-type domain-containing protein in PDB entry 8oh5, assembly 1, front view.
4Fe-4S ferredoxin-type domain-containing protein in PDB entry 8oh5, assembly 1, side view.
4Fe-4S ferredoxin-type domain-containing protein in PDB entry 8oh5, assembly 1, top view.
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Formate dehydrogenase-O, major subunit
Chains: C, F, I, L
Length: 1172 amino acids
Theoretical weight: 126.49 KDa
Source organism: Sporomusa ovata DSM 2662
UniProt:
  • Canonical: A0A0U1KYI6 (Residues: 1-1172; Coverage: 100%)
Gene name: SpAn4DRAFT_2937
Pfam:
Formate dehydrogenase-O, major subunit in PDB entry 8oh5, assembly 1, front view.
Formate dehydrogenase-O, major subunit in PDB entry 8oh5, assembly 1, side view.
Formate dehydrogenase-O, major subunit in PDB entry 8oh5, assembly 1, top view.
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