Question

there are five amino acids, namely, m, p, s, a, and k, in a mixture that have created a polypeptide. the amino acid m has a free amino group and the amino acid s has a free carboxyl group. identify the amino acid at the n - terminal end of the polypeptide sequence. use the table below.

Explanation:

In a polypeptide chain, the N - terminal end has a free amino group. Given that amino acid M has a free amino group, it is the amino acid at the N - terminal end of the polypeptide sequence.

Answer:

Methionine (M)