Question

A solution contains glycine and alanine. What are the possible dipeptide products that can form from this mixture? Enter each answer as two three-letter codes joined with a dash (e.g. ala-ala).

Answer 1

There are four possible dipeptide products in a solution containing glycine and alanine. They can be written as follows.

1. gly-gly

2. gly-ala

3. ala-gly

4. ala-ala

Explanation: glycine (gly) can form dipeptide with itself or with alanine (ala). Similarly, alanine can form dipeptide with itself or with glycine. In case of 2nd dipeptide, gly is the N-terminus amino acid and ala is the C-terminus amino acid, whereas in case of 3rd dipeptide, ala is the N-terminus amino acid and gly is the C-terminus amino acid.