Becker's World of the Cell (9th Edition)
Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 19, Problem 19.6PS

(a)

Summary Introduction

To explain: The result that when puromycin is added to a cell-free system containing all the necessary machinery for protein synthesis, incomplete polypeptide chains are released from the ribosomes.

Introduction: Puromycin is an antibiotic obtained from Streptomyces alboniger. This is primarily involved in the inhibition of protein synthesis. It is an inhibitor of translation in both the cells of prokaryotic and eukaryotic organisms.

(b)

Summary Introduction

To determine: The polypeptide chain end to which the puromycin will be attached.

Introduction: Puromycin is an antibiotic obtained from Streptomyces alboniger. This is primarily involved in the inhibition of protein synthesis. It is an inhibitor of translation in both the cells of prokaryotic and eukaryotic organisms.

(c)

Summary Introduction

To determine: The puromycin will bind to A or P site on the ribosome or to both..

Introduction: Puromycin is an antibiotic obtained from Streptomyces alboniger. This is primarily involved in the inhibition of protein synthesis. It is an inhibitor of translation in both the cells of prokaryotic and eukaryotic organisms.

(d)

Summary Introduction

To explain: If puromycin is a better inhibitor of protein synthesis in eukaryotes or bacteria.

Introduction: Puromycin is an antibiotic obtained from Streptomyces alboniger. This is primarily involved in the inhibition of protein synthesis. It is an inhibitor of translation in both the cells of prokaryotic and eukaryotic organisms.

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