Glycine (Gly or G) is an amino acid found in proteins.
Structure of glycine
Like all of the amino acids, glycine has two functional groups, a carboxyl group (COOH) and an amine group (NH2). It has the simplest side chain of all of the amino acids, composed of a single hydrogen atom (-H).
Function of glycine
Glycine is not an essential amino acid as it is produced from serine.
In addition to being contained in proteins, glycine has other important functions.
Glycine is the simplest of the amino acids (carbon atom in black, oxygen in red, nitrogen in blue and hydrogen in white). © Ben Mills, public domain