Amino Acids

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Amino acid

The small molecules that make up proteins. The basic building block of proteins (or polypeptides).

Ala

Alanine

Arg

Arginine

Asn

Asparagine

Asp

Aspartic acid

Cys

Cysteine

Glu

Glutamic acid

Gln

Glutamine

Gly

Glycine

His

Histidine

Ile

Isoleucine, essential

Leu

Leucine, essential

Lys

Lysine, essential

Met

Methionine, essential

Phe

Phenylalanine, essential

Pro

Proline

Ser

Serine

Thr

Threonine, essential

Trp

Tryptophan, essential

Tyr

Tyrosine

Val

Valine, essential

Essential amino acids

valine, tryptophan, threonine, phenylalanine, methionine, lysine, leucine, isoleucine

Nonessential amino acids

tyrosine, serine, proline, histidine, glycine, glutamine, glutamic acid, cysteine, aspartic acid, asparagine, arginine, alanine