Which of the following amino acids has a side chain that can

Which of the following amino acids has a side chain that can serve as a hydrogen bond donor AND acceptor in its predominant form at pH 7? Only one is correct.

a) N b) V c) K d) D e) M

Solution

THE CORRECT ANSWER IS-

a)Asaragine

(NH2 group of the side chain can form hydrogen bond with other amino acid side chain and it is predominant at ph-7.0 as its isoelectric point is 5.41