Amino acid

L theanine is a non protein amino acid, chemically gamma glutamylethylamide, found almost exclusively in the tea plant Camellia si...

L tyrosine is an amino acid made in the body from phenylalanine by the enzyme phenylalanine hydroxylase, so it becomes essential o...

L tryptophan is an essential amino acid with an indole side chain, first isolated from casein in 1901 by Frederick Gowland Hopkins...

Glycine is the simplest amino acid, with a single hydrogen atom as its side chain, and the only common amino acid that is not chir...

Leucine is one of the three branched chain amino acids, together with isoleucine and valine, and is an essential amino acid that m...

Lysine is an essential amino acid with a positively charged side chain. It is often the limiting amino acid in cereal grains such ...

Methionine is an essential sulfur containing amino acid. It holds a special place in protein synthesis because the start codon use...

Arginine is an amino acid that healthy adults can synthesize, mainly from citrulline in the kidneys, but it is considered conditio...

Glutamine is the most abundant free amino acid in human blood and skeletal muscle. The body normally makes enough of it, but it is...

Citrulline is a non protein amino acid, meaning it is not incorporated into proteins during translation. It was first isolated fro...

Beta alanine is a naturally occurring beta amino acid, distinct from the alpha amino acid alanine used to build proteins. The body...