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H3N. Amino acids are bonded together in a linear polymer to form peptides or proteins. A small peptide is shown below. Define the two ends of this peptide. A) I is the N terminus; II is the C terminus B) I is the C terminus; II is the N terminus C) I is the 5' terminus; II is the 3' terminus D) I is the 3' terminus; II is the 5' terminus

H3N. Amino acids are bonded together in a linear polymer to form peptides or proteins. A small peptide is shown below. Define the two ends of this peptide. A) I is the N terminus; II is the C terminus B) I is the C terminus; II is the N terminus C) I is the 5' terminus; II is the 3' terminus D) I is the 3' terminus; II is the 5' terminus

Biochemistry
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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### Background Information Amino acids are bonded together in a linear polymer to form peptides or proteins. ### Peptide Structure Analysis Below is a small peptide. Your task is to define the two ends of this peptide. ![Peptide Diagram](#) **Diagram Explanation:** - The peptide structure shows two ends labeled as "I" and "II." - End "I" contains an \( \text{H}_3\text{N}^+ \) group, which typically represents the amino terminus or "N terminus." - End "II" contains a \( \text{COO}^- \) group, indicative of the carboxyl terminus or "C terminus." ### Options for Defining the Peptide Ends Choose the correct description of the peptide ends from the following options: A) I is the N terminus; II is the C terminus B) I is the C terminus; II is the N terminus C) I is the 5’ terminus; II is the 3’ terminus D) I is the 3’ terminus; II is the 5’ terminus ### Correct Answer The correct answer is **A**: I is the N terminus; II is the C terminus.
Transcribed Image Text:### Background Information Amino acids are bonded together in a linear polymer to form peptides or proteins. ### Peptide Structure Analysis Below is a small peptide. Your task is to define the two ends of this peptide. ![Peptide Diagram](#) **Diagram Explanation:** - The peptide structure shows two ends labeled as "I" and "II." - End "I" contains an \( \text{H}_3\text{N}^+ \) group, which typically represents the amino terminus or "N terminus." - End "II" contains a \( \text{COO}^- \) group, indicative of the carboxyl terminus or "C terminus." ### Options for Defining the Peptide Ends Choose the correct description of the peptide ends from the following options: A) I is the N terminus; II is the C terminus B) I is the C terminus; II is the N terminus C) I is the 5’ terminus; II is the 3’ terminus D) I is the 3’ terminus; II is the 5’ terminus ### Correct Answer The correct answer is **A**: I is the N terminus; II is the C terminus.
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