Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 11 - Problems: 11.52

Answer

See explanation below.

Work Step by Step

Peptide bonds are strong and not broken by conditions that denature proteins, such as heating. Prolonged exposure to a strong acid or base at elevated temperatures is required to hydrolyze these bonds nonenzymically. Characteristics of the peptide bond. The peptide bond has a partial double-bond character. It is shorter than a single bond, and is rigid and planar. This prevents free rotation around the bond between the carbonyl carbon and the nitrogen of the peptide bond. However, the bonds between the α-carbons and the α-amino or α- carboxyl groups can be freely rotated. --This allows the polypeptide chain to assume a variety of possible configurations.
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