Home

Other contributors have said "What are the types of amino acids?" is the same question as "How many different types of amino acids are there?". If you believe that these are not asking the same thing and should be answered differently, click here.

How many different types of amino acids are there?

Answer:
There are 20 amino acids necessary for human beings. However, the diversity of proteins is compensated by long, varied, and complex chains of polypeptides.

There are far more than 20 amino acids overall, although most are not especially important in Biology.

See related question below for a listing of all amino acids.
Related questions
Related answers:
Can you answer these?