N-terminus C-terminus H2N(H2C)4 , N CO₂H H H NH2 H2N(H2C)4 Η ΝΗΣ D-Lys OH OH OH H NH2 H₂N H D-Val L-Val 15. Consider the peptide in Figure 1, above. Which of the following statements is correct? (2 marks) 1. both the C-terminus and the N-terminus have been labelled correctly. 2. the C-terminus has been labelled correctly and the N-terminus has been labelled incorrectly. 3. both the C-terminus and the N-terminus have been labelled incorrectly. 4. the C-terminus has been labelled incorrectly and the N-terminus has been labelled correctly.

General, Organic, and Biological Chemistry
7th Edition
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:H. Stephen Stoker
Chapter20: Proteins
Section: Chapter Questions
Problem 20.57EP: For the tripeptide GlyAlaCys a. What amino acid is located at the peptides N-terminal end? b. What...
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N-terminus
C-terminus
H2N(H2C)4
,
N
CO₂H
H
H
NH2
H2N(H2C)4
Η ΝΗΣ
D-Lys
OH
OH
OH
H NH2
H₂N H
D-Val
L-Val
15. Consider the peptide in Figure 1, above. Which of the following statements is correct? (2 marks)
1. both the C-terminus and the N-terminus have been labelled correctly.
2. the C-terminus has been labelled correctly and the N-terminus has been labelled incorrectly.
3. both the C-terminus and the N-terminus have been labelled incorrectly.
4. the C-terminus has been labelled incorrectly and the N-terminus has been labelled correctly.
Transcribed Image Text:N-terminus C-terminus H2N(H2C)4 , N CO₂H H H NH2 H2N(H2C)4 Η ΝΗΣ D-Lys OH OH OH H NH2 H₂N H D-Val L-Val 15. Consider the peptide in Figure 1, above. Which of the following statements is correct? (2 marks) 1. both the C-terminus and the N-terminus have been labelled correctly. 2. the C-terminus has been labelled correctly and the N-terminus has been labelled incorrectly. 3. both the C-terminus and the N-terminus have been labelled incorrectly. 4. the C-terminus has been labelled incorrectly and the N-terminus has been labelled correctly.
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