The non-essential amino acid among the following is:

There are 11 nonessential amino acids of which Alanine is one.

Nonessential amino acids include: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine. Conditional amino acids are usually not essential, except in times of illness and stress. Nonessential amino acids support tissue growth and repair, immune function, red blood cell formation, and hormone synthesis.However, unlike essential amino acids, a healthy body can create these proteins if given enough protein sources with essential amino acids.