Amino acids are not only the building blocks of proteins, but also serve as precursors for other important plant metabolites and constitute an essential part of human and animal diets. The biosynthesis and degradation of the twenty standard Amino acids represent the complexity and ingenuity of metabolism at its most astounding. Plants are able to generate all 20 Amino acids necessary for protein synthesis by themselves. They do even synthesize some more Amino acids. Glycine and Serine are two Interconvertible Amino acids that play an important role in C1 metabolism. Glycine is the simplest Amino acid and is the only Amino acid that is not optically active. On a molar basis, Glycine is the second most common Amino acid found in proteins [...]