Textbook Question
How does the polarity of the R group in leucine compare to the R group in serine?
1443
views
Ch.16 Amino Acids, Proteins, and Enzymes
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
Not the one you use?Change textbookSelect a different textbook
Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 16, Problem 9d
Write the name for the amino acid represented by each of the following abbreviations:
d. Cys
Verified step by step guidance1
Identify the abbreviation 'Cys' as the three-letter code for an amino acid.
Recall that 'Cys' stands for the amino acid cysteine, which is one of the 20 standard amino acids.
Understand that cysteine is unique because it contains a thiol (-SH) group in its side chain, making it important for forming disulfide bonds in proteins.
Note that the full name of the amino acid 'Cys' is 'cysteine'.
Write the name 'cysteine' as the answer for the abbreviation 'Cys'.
Verified video answer for a similar problem:
This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
1mWas this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Amino Acids
Amino acids are organic compounds that serve as the building blocks of proteins. They contain an amino group, a carboxyl group, and a unique side chain (R group) that determines the properties of each amino acid. There are 20 standard amino acids, each represented by a three-letter abbreviation and a one-letter code, which are essential for various biological functions.
Recommended video:
Guided course
3:03
Amino Acid Catabolism: Amino Group Example 2
Cysteine
Cysteine is a sulfur-containing amino acid, abbreviated as Cys. It plays a crucial role in protein structure and function due to its ability to form disulfide bonds, which stabilize protein conformation. Cysteine is also involved in various metabolic processes and is important for the synthesis of glutathione, a key antioxidant in the body.
Recommended video:
Guided course
2:41Interactions within the Tertiary Structure Concept 2
Abbreviations in Biochemistry
In biochemistry, amino acids are often represented by standard abbreviations to simplify communication and notation. Each amino acid has a unique three-letter abbreviation (e.g., Cys for cysteine) and a one-letter code (C). Understanding these abbreviations is essential for interpreting protein sequences and studying biochemical pathways.
Recommended video:
Guided course
00:36What is Chemistry? Example 1
Related Practice
Textbook Question
Draw the structure for each of the following amino acids at physiological pH:
a. lysine
647
views
Textbook Question
Classify each of the amino acids in problem 16.5 as polar or nonpolar. If polar, indicate if the R group is neutral, acidic, or basic. Indicate if each is hydrophobic or hydrophilic.
682
views
Textbook Question
Write the name for the amino acid represented by each of the following abbreviations:
d. G
29
views
Textbook Question
Draw the condensed structural formula for each of the following peptides, and give its three-letter and one-letter abbreviations:
a. alanylcysteine
920
views
Textbook Question
Draw the condensed structural formula for each of the following peptides, and give its three-letter and one-letter abbreviations:
c. glycylalanylvaline
951
views