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TrwK/VirB4unbound trimer of dimers complex (with Hcp1) from the R388 type IV secretion system determined by cryo-EM.

Electron Microscopy
4.1Å resolution
PDB entry 7o42 coloured by chain, front view.
PDB entry 7o42 coloured by chain, side view.
PDB entry 7o42 coloured by chain, top view.
Source organisms:
Assembly composition:
homo hexamer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Protein hcp1, Type IV secretion system protein virB4
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Multimeric state: homo hexamer
Accessible surface area: 237080.21 Å2
Buried surface area: 27500.1 Å2
Dissociation area: 4,109.4 Å2
Dissociation energy (ΔGdiss): 44.04 kcal/mol
Dissociation entropy (TΔSdiss): 19.02 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-108783

Macromolecules

Protein hcp1; Type IV secretion system protein virB4
Chains: A, B, C, D, E, F
Length: 990 amino acids
Theoretical weight: 111.49 KDa
Source organisms: Expression system: Escherichia coli
UniProt:
  • Canonical: A8R751 (Residues: 1-823; Coverage: 100%)
  • Canonical: Q9I747 (Residues: 2-162; Coverage: 99%)
    • nullnull
Gene names: PA0085, hcp1, trwK
Pfam:
InterPro:
Protein hcp1 in PDB entry 7o42, assembly 1, front view.
Protein hcp1 in PDB entry 7o42, assembly 1, side view.
Protein hcp1 in PDB entry 7o42, assembly 1, top view.
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