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Rapid One-step Enzymatic Synthesis and All-aqueous Purification of Trehalose Analogues

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|April 29, 2021

Summary

This summary is machine-generated.

This study introduces a rapid in silico method to engineer glycoside hydrolases for improved synthetic oligosaccharide production. The approach identifies key mutations to enhance transglycosylation yields, overcoming enzyme limitations in glycobiology.

Keywords:

enzyme catalysis hydrolases multiple sequences alignment oligosaccharide synthesis protein engineering transglycosylation

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Area of Science:

Carbohydrate Chemistry
Enzymology
Protein Engineering

Background:

Glycobiology research is limited by the lack of synthetic, defined oligosaccharides.
Enzyme-catalyzed glycosylation using glycoside hydrolases is hindered by their inherent hydrolytic activity.
Current protein engineering methods for enzyme modification are often laborious and require extensive prior knowledge.

Purpose of the Study:

To develop a straightforward and rapid strategy for engineering glycoside hydrolases to enhance transglycosylation yields.
To identify single-mutant candidates that improve the efficiency of synthetic oligosaccharide production.
To create a generic method applicable to various glycosidic bond formations and enzyme families.

Main Methods:

Rational, rapid in silico analysis of protein sequences to predict beneficial mutations.
Identification of 6-12 single-mutant candidates for improved transglycosylation.
Validation of mutations in target enzymes and demonstration of their transposable nature.

Main Results:

A novel in silico strategy successfully pinpointed single-mutant candidates to boost transglycosylation yields.
The method requires minimal prior knowledge of the target enzyme, relying primarily on sequence data.
Engineered enzymes demonstrated improved catalytic efficiency for forming diverse glycosidic bonds (pyranosides, furanosides; exo/endo action).
Mutations were successfully transposed to other, even distantly related, enzymes, showcasing broad applicability.

Conclusions:

This rational in silico approach offers a generic and efficient platform for engineering glycoside hydrolases.
The method significantly accelerates the development of biocatalysts for synthesizing complex carbohydrates.
The findings have broad implications for advancing glycobiology and carbohydrate-based therapeutics.