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THE STRUCTURE OF CLOSTRIDIUM PERFRINGENS NANI SIALIDASE AND ITS CATALYTIC INTERMEDIATES

X-ray diffraction
0.97Å resolution
PDB entry 2vk5 coloured by chain, front view.
PDB entry 2vk5 coloured by chain, side view.
PDB entry 2vk5 coloured by chain, top view.
Source organism: Clostridium perfringens
Assembly composition:
monomeric (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: exo-alpha-sialidase
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Multimeric state: monomeric
Accessible surface area: 17340.36 Å2
Buried surface area: 738.31 Å2
Dissociation area: 129.19 Å2
Dissociation energy (ΔGdiss): 1.19 kcal/mol
Dissociation entropy (TΔSdiss): 0.92 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-176792

Macromolecules

exo-alpha-sialidase
Chain: A
Length: 452 amino acids
Theoretical weight: 50.41 KDa
Source organism: Clostridium perfringens
Expression system: Escherichia coli
UniProt:
  • Canonical: Q59310 (Residues: 243-694; Coverage: 65%)
Gene name: nanH
Pfam: BNR repeat-like domain
InterPro:
CATH:
exo-alpha-sialidase in PDB entry 2vk5, assembly 1, front view.
exo-alpha-sialidase in PDB entry 2vk5, assembly 1, side view.
exo-alpha-sialidase in PDB entry 2vk5, assembly 1, top view.
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