An Amino Acid Substitution Can Result in a Large Change

Multiple Choice

An amino acid substitution can result in a large change in secondary and tertiary structure.Sometimes, the substitution leads to very little change.The structure of valine is shown below.Which amino acid would probably cause the least amount of perturbation to protein structure if it was substituted for a valine?

A) amino acid a
B) amino acid b
C) amino acid c
D) amino acid d
E) amino acid e