Chapter 29: Q16. (page 1166)
How many different tripeptides can be formed from three different amino acids?
Short Answer
Two different tripeptides can be formed from three different amino acids.
Chapter 29: Q16. (page 1166)
How many different tripeptides can be formed from three different amino acids?
Two different tripeptides can be formed from three different amino acids.
All the tools & learning materials you need for study success - in one app.
Get started for freeQuestion: For the tetra peptide Asp–Arg–Val–Tyr:
a. Name the peptide using one-letter abbreviations.
b. Draw the structure.
c. Label all amide bonds.
d. Label the N-terminal and C-terminal amino acids
Draw the structure of leu-enkephalin, a pentapeptide that acts as an analgesic and opiate, and has the following sequence: Tyr–Gly–Gly–Phe–Leu. (The structure of a related peptide, met-enkephalin,
appeared in Section 22.6B.)
Draw the organic products formed in each reaction.
Another strategy used to resolve amino acids involves converting the carboxy group to an ester and then using a chiral carboxylic acid to carry out an acid-base reaction at the free amino group. Using a racemic mixture of alanine enantiomers and (R)-mandelic acid as resolving agent, write out the steps showing how a resolution process would occur.
What types of stabilizing interactions exist between each of the following pairs of amino acids?
a. Ser and Tyr
b. Val and Leu
c. two Phe residues
What do you think about this solution?
We value your feedback to improve our textbook solutions.