Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Chapter 32, Problem 13P
Interpretation Introduction
Interpretation:
The configuration of reaction catalyzed by beta-galactosidase should be determined.
If each step proceeds with inversion of configuration, the overall stereochemistry of the mechanism should be determined.
Concept introduction:
Galactose and glucose are monosaccharide units, that undergo condensation reaction to produce lactose, a disaccharide. Further, hydrolysis of galactose by the enzyme lactase and beta-galactosidase yields back glucose and galactose. Beta-galactosidase is an enzyme which is produced by the lac operon in E. Coli.
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