Textbook Question
Draw the structural formula for each of the following peptides:
c. Val—Arg
Ch.10 Proteins Workers of the Cell
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696
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Table of contents
- Ch.4 Introduction to Organic Compounds75
- Ch.5 Chemical Reactions19
- Ch.6 Carbohydrates Life's Sweet Molecules62
- Ch.7 States of Matter and Their Attractive Forces8
- Ch.8 Solution Chemistry Sugar and Water Do Mix4
- Ch.10 Proteins Workers of the Cell89
- Ch.11 Nucleic Acids Big Molecules with a Big Role69
- Ch.12 Food as Fuel An Overview of Metabolism65
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696Not the one you use?Change textbook
Chapter 6, Problem 20c
Identify the N-terminus and the C-terminus for each of the peptides in Problem 10.18.
c. Val—Arg
Verified step by step guidance1
Understand the structure of peptides: Peptides are chains of amino acids linked by peptide bonds. Each peptide has two ends: the N-terminus (amino group, -NH2) and the C-terminus (carboxyl group, -COOH). The N-terminus is the starting point of the peptide chain, while the C-terminus is the ending point.
Examine the peptide sequence provided in Problem 10.18 (refer to the textbook or problem details for the specific sequence). Identify the amino acid at the beginning of the sequence, which will have a free amino group (-NH2). This is the N-terminus.
Identify the amino acid at the end of the sequence, which will have a free carboxyl group (-COOH). This is the C-terminus.
If the peptide sequence is written in the standard format (from left to right), the first amino acid on the left is the N-terminus, and the last amino acid on the right is the C-terminus.
Double-check the structure of the peptide to ensure that the N-terminus and C-terminus are correctly identified, considering any modifications or special cases mentioned in the problem.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Peptide Structure
Peptides are short chains of amino acids linked by peptide bonds. Each peptide has a specific orientation, with an N-terminus (amino end) and a C-terminus (carboxyl end). Understanding this structure is crucial for identifying the termini of any peptide sequence.
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Peptides Concept 1
Amino Acids
Amino acids are the building blocks of peptides and proteins. Each amino acid has a central carbon atom, an amino group, a carboxyl group, and a unique side chain. The sequence and composition of these amino acids determine the properties and functions of the peptide.
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Terminology in Biochemistry
In biochemistry, the terms N-terminus and C-terminus refer to the ends of a peptide chain. The N-terminus is where the amino group is located, while the C-terminus is where the carboxyl group is found. Correctly identifying these termini is essential for understanding peptide synthesis and function.
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Related Practice
Textbook Question
Draw the structural formula for each of the following peptides:
d. IYP
Textbook Question
Identify the N-terminus and the C-terminus for each of the peptides in Problem 10.18.
a. Ala—Asn—Thr
b. DS
Textbook Question
Identify the N-terminus and the C-terminus for each of the peptides in Problem 10.18.
d. IYP
Textbook Question
How many different tripeptides that contain one leucine, one glutamate, and one tryptophan are possible?
Textbook Question
Name the stabilizing attractive force found in secondary structures of proteins.