Chapter 29: Q53P (page 1194)
Name each peptide using both the three-letter and one-letter abbreviations of the component amino acids.
a.
b.
Short Answer
- Gly-Asp-Glu and G-D-E.
- Ala-Gly-Arg and A-G-R.
Chapter 29: Q53P (page 1194)
Name each peptide using both the three-letter and one-letter abbreviations of the component amino acids.
a.
b.
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Get started for freeWhat amino acid is formed when CH3CONHCH(CO2Et)2is treated with the following series of reagents:
Glutathione, a powerful antioxidant that destroys harmful oxidizing agents in cells, is composed of glutamic acid, cysteine, and glycine, and has the following structure:
a. What product is formed when glutathione reacts with an oxidizing agent?
b. What is unusual about the peptide bond between glutamic acid and cysteine?
Devise a synthesis of the following dipeptide from amino acid starting materials.
Give the amino acid sequence of an octapeptide that contains the amino acids Tyr, Ala, Leu (2 equiv), Cys, Gly, Glu and Val, and forms the following fragments when partially hydrolyzed with HCl: Val-Cys-Gly-Glu, Ala-Leu-Tyr, and Tyr-Leu-Val-Cys.
Tryptophan is not classified as a basic amino acid even though it has a heterocycle containing a nitrogen atom. Why is the N atom in the five-membered ring of tryptophan not readily protonated by acid?
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