Question

How many naturally occurring amino acids are there?

Answer 1

Twenty-two amino acids are naturally incorporated into polypeptides and are called proteinogenic or natural amino acids. Of these, 20 are encoded by the universal genetic code. The remaining 2, selenocysteine and pyrrolysine, are incorporated into proteins by unique synthetic mechanisms.

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Answer 2

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Amino acids

~ There are Twenty different types of natural occurring amino acids are present which are monomers of protein And they together constitute Protein.