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Crystal structure of the NanB sialidase from streptococcus pneumoniae in complex with 3-ammoniopropane-1-sulfonate

X-ray diffraction
2.1Å resolution
PDB entry 4fow coloured by chain, front view.
PDB entry 4fow coloured by chain, side view.
PDB entry 4fow coloured by chain, top view.
Source organism: Streptococcus pneumoniae
Assembly composition:
monomeric (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Sialidase B
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Multimeric state: monomeric
Accessible surface area: 24993.37 Å2
Buried surface area: 200.8 Å2
Dissociation area: 100.4 Å2
Dissociation energy (ΔGdiss): -0.87 kcal/mol
Dissociation entropy (TΔSdiss): 0.12 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-176218

Macromolecules

Sialidase B
Chain: A
Length: 697 amino acids
Theoretical weight: 77.78 KDa
Source organism: Streptococcus pneumoniae
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q54727 (Residues: 1-697; Coverage: 100%)
Gene names: SP_1687, nanB
Pfam:
InterPro:
CATH:
Sialidase B in PDB entry 4fow, assembly 1, front view.
Sialidase B in PDB entry 4fow, assembly 1, side view.
Sialidase B in PDB entry 4fow, assembly 1, top view.
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