How many peptide bonds are present in the peptide shown below?
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Question
How many peptide bonds are present in the peptide shown below?
Transcribed Image Text:H₂N+
CH₂
CH-CH3
CH3
N
IZ
NH3
CH₂
CH₂
CH₂
CH₂
ZI
CH₂
CH₂
S
CH3
IZ
H
CH₂
ZI
CH₂
OH
Expert Solution
Step 1: Peptide bond introduction
By removing a water molecule from an amino group of one amino acid and a carboxyl group of the neighboring amino acid, a peptide bond, also known as a covalent chemical bond, unites the two amino acids in a polypeptide chain. The amide bond that connects the alpha-amino nitrogen of a single amino acid to a carbonyl carbon of the following amino acid is connected by a peptide bond that has a planar trans conformation and experiences minimal rotation.
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