PDBe 2a75

X-ray diffraction
1.95Å resolution

Trypanosoma rangeli Sialidase In Complex With 2,3- Difluorosialic Acid (Covalent Intermediate)

Released:

Function and Biology Details

Reaction catalysed:
Hydrolysis of alpha-(2->3)-, alpha-(2->6)-, alpha-(2->8)- glycosidic linkages of terminal sialic acid residues in oligosaccharides, glycoproteins, glycolipids, colominic acid and synthetic substrates. 
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Sialidase Chain: A
Molecule details ›
Chain: A
Length: 652 amino acids
Theoretical weight: 71.21 KDa
Source organism: Trypanosoma rangeli
Expression system: Escherichia coli
UniProt:
  • Canonical: O44049 (Residues: 23-660; Coverage: 100%)
Sequence domains: BNR repeat-like domain
Structure domains:

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P212121
Unit cell:
a: 74.218Å b: 96.102Å c: 106.648Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.174 0.174 0.216
Expression system: Escherichia coli