Question: Expand your answer to Problem 27.10 by showing the structural formula for each dipeptide in a manner that reveals the stereochemistry at the -carbon atom.

Expand your answer to Problem 27.10 by showing the structural formula for each dipeptide in a manner that reveals the stereochemistry at the α-carbon atom.
Problem 27.10
Write structural formulas showing the constitution of each of the following dipeptides. Rewrite each sequence using one-letter abbreviations for the amino acids.
(a) Ala-Phe
(b) Phe-Ala
(c) Gly-Glu
(d) Lys-Gly
(e) D-Ala-D-Ala

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