Question

which is the following amino acids has a indole ring
A. Met
B.phe
C.Trp
D.Val
E.His​

Answer 1

The aromatic ring of tyrosine contains a hydroxyl group. This hydroxyl group is reactive, in contrast with the rather inert side chains of the other amino acids discussed thus far. Tryptophan has an indole ring joined to a methylene (-CH2-) group; the indole group comprises two fused rings and an NH group