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Updated: Jul 3, 2026
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Metabolic Glycoengineering of Sialic Acid Using N-acyl-modified Mannosamines
Published on: November 25, 2017
Structural insights into sialic acid enzymology.
Alejandro Buschiazzo1, Pedro M Alzari
1Département de Biologie Structurale & Chimie, Institut Pasteur, 25 rue du Docteur Roux, 75724 Paris, France. alebus@pasteur.edu.uy
Current Opinion in Chemical Biology
|July 16, 2008
Summary
Sialic acid metabolism enzymes, including sialidases and sialyltransferases, have unique structures and mechanisms. Recent structural studies reveal novel insights into how these enzymes handle the distinct features of sialic acids.
Area of Science:
- Biochemistry
- Glycobiology
- Enzymology
Background:
- Sialic acids are crucial negatively charged sugars involved in diverse biological functions.
- Cellular sialic acid levels are tightly regulated by specific metabolic enzymes.
- Understanding these enzymes is key to deciphering cellular processes and disease mechanisms.
Purpose of the Study:
- To review recent advancements in the enzymes governing sialic acid metabolism.
- To highlight structural insights into sialidases and sialyltransferases.
- To explore the unique evolutionary adaptations of sialic acid-processing enzymes.
Main Methods:
- Focus on structural biology, including X-ray crystallography.
- Analysis of catalytic mechanisms of sialidases.
- Examination of structural variations in sialyltransferases.
Main Results:
- Elucidation of a modified catalytic mechanism for sialidases, differing from typical glycosidases.
- Discovery of significant structural variations in sialyltransferases compared to known glycosyltransferase folds.
- Structural data suggests enzymes have evolved specific adaptations for handling sialic acids.
Conclusions:
- Sialic acid-handling enzymes exhibit unique structural and mechanistic properties.
- Structural studies provide critical insights into enzyme function and evolution.
- These findings advance our understanding of sialic acid biology and enzyme engineering.
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