Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 14 - From DNA to Protein: Gene Expression - 14.6 - Polypeptides Can Be Modified and Transported during or after Translantion - 14.6 Recap - Learning Outcomes - Page 309: 1

Answer

Newly synthesized proteins go through branch points to determine their fate. Proteins affixed with a signal peptide will go to the ER, where they are modified before being directed to organelles. Other proteins without the signal peptide will go to the cytosol. Some proteins will have biochemical labels that may send them to the mitochondria, Golgi, or lysosomes.

Work Step by Step

Newly synthesized proteins go through branch points to determine their fate. Proteins affixed with a signal peptide will go to the ER, where they are modified before being directed to organelles. Other proteins without the signal peptide will go to the cytosol. Some proteins will have biochemical labels that may send them to the mitochondria, Golgi, or lysosomes.
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