Fundamentals of Biochemistry: Life at the Molecular Level
Fundamentals of Biochemistry: Life at the Molecular Level
5th Edition
ISBN: 9781118918463
Author: Voet
Publisher: WILEY
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Chapter 16, Problem 31CQ
Summary Introduction

To determine: The molecules from the given diagram representing sucrose synthesis in plants.

Concept introduction:

Sucrose is a disaccharide of glucose and fructose. It is synthesized in the cytosol of the plant cells from triose phosphates. In this reaction, the glucose residue is activated to uridine diphosphate-glucose, which is catalyzed by the enzyme uridine diphosphate-glucose pyrophosphorylase. The glucose residue is transferred by the enzyme sucrose phosphate synthase from UDP-glucose to fructose-6-phosphate; this forms sucrose-6-phosphate. The sucrose-6-phosphate phosphatase cleaves the phosphate group to yield sucrose.

Correct answer:

Fig. 1 shows that the identified molecule is fructose-6-phosphate.

Pictorial representation:

Fig.1 represents sucrose synthesis in plants.

Fundamentals of Biochemistry: Life at the Molecular Level, Chapter 16, Problem 31CQ

Fig.1: sucrose synthesis

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