This entry includes Glycine dehydrogenases, also known as glycine cleavage system P protein, which bind the alpha-amino group of glycine through its pyridoxal phosphate cofactor; CO2 is released and the remaining methylamine moiety is then transferred to the lipoamide cofactor of the H protein. The monomer consists of two domains, a large domain and a small domain. This entry represents the small domain, which has a complex alpha/beta structure [1,2].

1: Structure of P-protein of the glycine cleavage system: implications for nonketotic hyperglycinemia. Nakai T, Nakagawa N, Maoka N, Masui R, Kuramitsu S, Kamiya N; EMBO J. 2005;24:1523-1536. PMID:15791207

2: Structure of the homodimeric glycine decarboxylase P-protein from Synechocystis sp. PCC 6803 suggests a mechanism for redox regulation. Hasse D, Andersson E, Carlsson G, Masloboy A, Hagemann M, Bauwe H, Andersson I; J Biol Chem. 2013;288:35333-35345. PMID:24121504