Question

How many types of amino acids are present in proteins? ​

Answer 1

Explanation:

Because amino acids can be arranged in many different combinations, it's possible for your body to make thousands of different kinds of proteins from just the same 21 amino acids. You may see books that say there are only 20 amino acids.

Answer 2

✳️ proteins are built from a set of only 20 amino acids,each of which has a unique side chain. The side chain of amino acid have different chemistries . The largest group of amino acids have nonpolar side chains.

e.g. histidine,Leucine,lysine,isoleucine etc......

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