Question

Explain how/why the amino acid glycine and proline significantly impact the evolution of protein structure and function.

Answer 1

Solution:

Glycine has four different groups around the central carbon atom. The hydrogen attached as side chain is too small to fit in spaces and tight the corners during the folding of proteins.

As for as proline is concerned, it contains a modified amino group that forms a covalent bond with side chain (R group). The side chain of prolein provide an exceptional rigidity in conformation of the protein's secondary structure. The other amino acid do not able to give this type of rigidity.

Thus, both prolein and glycine are very important in the function and structure of proteins.