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Structure of the C-terminal SpoA domain of Shigella flexneri Spa33

X-ray diffraction
2.3Å resolution
PDB entry 4tt9 coloured by chain, front view.
PDB entry 4tt9 coloured by chain, side view.
PDB entry 4tt9 coloured by chain, top view.
Source organism: Shigella flexneri
Assembly composition:
homo dimer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Surface presentation of antigens protein SpaO
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Multimeric state: homo dimer
Accessible surface area: 8225.22 Å2
Buried surface area: 4692.7 Å2
Dissociation area: 2,305.37 Å2
Dissociation energy (ΔGdiss): 34.06 kcal/mol
Dissociation entropy (TΔSdiss): 11.21 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-141011
Assembly 2
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Assembly Name: Surface presentation of antigens protein SpaO
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Multimeric state: homo dimer
Accessible surface area: 7956.85 Å2
Buried surface area: 4971.74 Å2
Dissociation area: 2,358.44 Å2
Dissociation energy (ΔGdiss): 28.36 kcal/mol
Dissociation entropy (TΔSdiss): 11.55 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-141011

Macromolecules

Surface presentation of antigens protein SpaO
Chains: A, B, C, D
Length: 86 amino acids
Theoretical weight: 9.88 KDa
Source organism: Shigella flexneri
Expression system: Escherichia coli B
UniProt:
  • Canonical: P0A1K9 (Residues: 208-293; Coverage: 29%)
Gene names: CP0152, spa33, spaO
Pfam: Type III flagellar switch regulator (C-ring) FliN C-term
InterPro:
CATH: SpoA-like
Surface presentation of antigens protein SpaO in PDB entry 4tt9, assembly 1, front view.
Surface presentation of antigens protein SpaO in PDB entry 4tt9, assembly 1, side view.
Surface presentation of antigens protein SpaO in PDB entry 4tt9, assembly 1, top view.
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