Glycine (Gly or G) is the smallest of the
twenty amino acids commonly found in proteins.
Its formula is NH2CH2COOH.
Glycine is biosynthesized in the body and is not
essential to diet.
Glycine has been discovered in meteors, in Comets.
Some believe it present in the Interstellar Medium (ISM) and similar
molecules have been observed in Molecular Clouds.