The chirality of naturally occurring amino acids in proteins is
A) R.
B) L.
C) D.
D) the same as glyceraldehyde.

Question

Quizplus · Accepted Answer

The naturally occurring amino acids in proteins have a left-handed or L- configuration. This is based on the Fischer projection where the amino group (-NH2) is on the left and the carboxyl group (-COOH) is on the right. The opposite or right-handed configuration is called D-configuration.

The Chirality of Naturally Occurring Amino Acids in Proteins Is