Structural and Kinetic Analysis of Two Covalent Sialosyl-Enzyme Intermediates on Trypanosoma rangeli Sialidase.
Watts, A.G., Oppezzo, P., Withers, S.G., Alzari, P.M., Buschiazzo, A.(2006) J Biol Chem 281: 4149-4155
- PubMed: 16298994 
- DOI: 10.1074/jbc.M510677200
- Primary Citation of Related Structures:  
2A75, 2AGS, 2FHR - PubMed Abstract: 
Trypanosoma rangeli sialidase is a glycoside hydrolase (family GH33) that catalyzes the cleavage of alpha-2-->3-linked sialic acid residues from sialoglycoconjugates with overall retention of anomeric configuration. Retaining glycosidases usually operate through a ping-pong mechanism, wherein a covalent intermediate is formed between the carbohydrate and an active site carboxylic acid of the enzyme ...