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Remarkable structural similarities between diverse glycosyltransferases
1Department of Chemistry, Princeton University, Princeton, NJ 08544, USA.
Chemistry & Biology
|December 25, 2002
Summary
Glycosyltransferases (GTases) are highly diverse enzymes modifying many biopolymers. Despite low sequence similarity, most GTases share only two structural superfamilies, simplifying their future applications.
Area of Science:
- Enzymology
- Glycobiology
- Biochemistry
Background:
- Glycosyltransferases (GTases) represent a functionally diverse enzyme class.
- GTases modify diverse biopolymers including oligosaccharides, proteins, nucleic acids, and lipids.
- The products of glycosyl transfer exhibit varied effects on biological systems.
Purpose of the Study:
- To investigate the structural and evolutionary relationships among glycosyltransferases.
- To understand the conserved structural solutions for glycosyl transfer catalysis.
- To explore the potential for manipulating GTases in glycoconjugate chemistry.
Main Methods:
- Comparative analysis of GTase sequences and structures.
- Identification of conserved structural superfamilies.
- Functional characterization of GTase activity.
Main Results:
- GTases exhibit low sequence homology despite their diverse functions.
- The majority of GTases fall into only two major structural superfamilies.
- This structural conservation suggests limited evolutionary solutions for glycosyl transfer.
Conclusions:
- Conserved GTase structures simplify the manipulation of these enzymes for applications.
- A new era in glycoconjugate chemistry is anticipated due to these findings.
- Understanding GTase structural biology is key to advancing glycoscience.