Biochemistry
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 21, Problem 43P
Interpretation Introduction

(a)

Interpretation:

The reason the proteins are not visible in the lanes without amylase treatment should be discussed.

Concept introduction:

Alpha-amylase catalyzes the hydrolysis of alpha linkages in polysaccharides and release glucose and maltose. Glycogenin is an enzyme which catalyzes the formation of short glycogen primers from glucose molecules.

SDS-PAGE is a biochemical technique used to separate charge molecules in a mixture, according to their molecular masses. SDS acts as a surfactant and gives negative charge to the proteins. Thus it allows the protein separation only based on their molecular mass. Western blot is a visualizing technique which is commonly used to analyze proteins in a given sample via SDS-PAGE.

Interpretation Introduction

(b)

Interpretation:

The effect of treating the sample with a-amylase should be explained.

Concept introduction:

Alpha-amylase catalyzes the hydrolysis of alpha linkages in polysaccharides and release glucose and maltose. Glycogenin is an enzyme which catalyzes the formation of short glycogen primers from glucose molecules.

SDS-PAGE is a biochemical technique used to separate charge molecules in a mixture, according to their molecular masses. SDS acts as a surfactant and gives negative charge to the proteins. Thus it allows the protein separation only based on their molecular mass. Western blot is a visualizing technique which is commonly used to analyze proteins in a given sample via SDS-PAGE.

Interpretation Introduction

(c)

Interpretation:

The list of other glycogen associated proteins and the reasons for their absence in SDS-PAGE should be discussed.

Concept introduction:

Alpha-amylase catalyzes the hydrolysis of alpha linkages in polysaccharides and release glucose and maltose. Glycogenin is an enzyme which catalyzes the formation of short glycogen primers from glucose molecules.

SDS-PAGE is a biochemical technique used to separate charge molecules in a mixture, according to their molecular masses. SDS acts as a surfactant and gives negative charge to the proteins. Thus it allows the protein separation only based on their molecular mass. Western blot is a visualizing technique which is commonly used to analyze proteins in a given sample via SDS-PAGE.

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