How many amino acids are there that make up proteins?
The number of amino acids/protein differ largely and is characteristic for each protein separately. A protein is composed of amino acids, and the function of the protein depends of the type and order of the amino acids. Because amino acids can be arranged in many different combinations, it's possible for your body to make thousands of different kinds of protein from just the same 20 amino acids.The simplest protein of life, ribonuclease, contains 124 amino acids. The "average" protein, though, contains several thousand amino acids, but those several thousand comprised only about 20 different kinds of amino acids.