Glycine and alanine are different with respect to one substituent

biomolecules
cbse

#1

Glycine and alanine are different with respect to one substituent on the a-carbon. What are the
other common substituent groups?


#2

There are four substituent groups occupying the four valency positions in an amino acid. These are hydrogen, carboxyl group, amino group and a variable group designated as R group. The R group in amino acid glycine is a hydrogen and a methyl group in case of amino acid alanine, etc.