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Except for glycine, which is achiral , a...

Except for glycine, which is achiral , all the amino acids present is proteins

A

are chiral, but racemic

B

have the L configuration at their `alpha` carbon

C

have the R configuration at their `alpha` carbon

D

have the configuration at their `alpha` carbon

Text Solution

Verified by Experts

The correct Answer is:
B
Amino acids which combine into peptide to form the building blocks of a rest array of proteins are all L - steroisomers (left handed)
Glycine `NH_2 - CH_2 - COOH`
L - Amino acid `NH_2 - underset( R) underset(|)(CH- COOH`
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