Biochemistry: The Molecular Basis of Life
Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 7, Problem 43TQ
Summary Introduction

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The β- galactosidase is an enzyme that hydrolyzes only the β-(1,4) linkage of lactose. An unknown trisaccharide is converted by β- galactosidase into maltose and galactose. Draw the structure of the trisaccharide.

Introduction:

A trisaccharide is a sugar compound formed by the glycosidic linkage of three monosaccharide units. Galactose is a monosaccharide thatcombines with glucose via β-(1,4)-glycosidic linkage to form lactose. Whereas two monomeric glucose molecules combine by α-(1,4)-glycosidic linkage.

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