Identify the sequence of the peptide below. H CH2 CH, H,N*-CH-C-N-CH-C-N-CH-C-N-CH-C-N-CH-C-N-CH-C-N-CH-COOH H CH, Нн H CH, CH, CH, CH, *NH, CH2 H CH, H CH2 2. ÇH, ČOOH SH S ČH,

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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**Identify the sequence of the peptide below.**

The peptide chain is represented as follows:

\[ \text{H}_3\text{N}^+-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{COOH} \]

Each amino acid side chain (R group) is indicated:
- First: \(\text{CH}_2-\text{SH}\)
- Second: \(\text{H}-\text{CH}_3\)
- Third: \(\text{CH}_2-\text{CH}_2-\text{COOH}\)
- Fourth: \(\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{NH}_3^+\)
- Fifth: \(\text{H}-\text{CH}_2-\text{OH}\)
- Sixth: \(\text{CH}_2-\text{S}-\text{CH}_3\)

Options to identify the sequence of this peptide:
- ○ CAEKGSM
- ○ MSGKEAC
- ○ CAKEGMS
- ○ KEACMSG

To solve, match the correct side chains to their respective amino acids and select the sequence that represents the given peptide structure.
Transcribed Image Text:**Identify the sequence of the peptide below.** The peptide chain is represented as follows: \[ \text{H}_3\text{N}^+-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{C}-\text{N}-\text{CH}-\text{COOH} \] Each amino acid side chain (R group) is indicated: - First: \(\text{CH}_2-\text{SH}\) - Second: \(\text{H}-\text{CH}_3\) - Third: \(\text{CH}_2-\text{CH}_2-\text{COOH}\) - Fourth: \(\text{CH}_2-\text{CH}_2-\text{CH}_2-\text{NH}_3^+\) - Fifth: \(\text{H}-\text{CH}_2-\text{OH}\) - Sixth: \(\text{CH}_2-\text{S}-\text{CH}_3\) Options to identify the sequence of this peptide: - ○ CAEKGSM - ○ MSGKEAC - ○ CAKEGMS - ○ KEACMSG To solve, match the correct side chains to their respective amino acids and select the sequence that represents the given peptide structure.
Expert Solution
Step 1

The peptide bond is formed between carboxyl group of one amino acid and amino group of other amino acid (-CO-NH2).

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