Status	Description	Organism	Genes	References
	CTP:2, 3-di-O-geranylgeranyl-sn-glycero-1-phosphate cytidyltransferase	Methanosarcina barkeri	GHUW-1926
	CTP:2, 3-di-O-geranylgeranyl-sn-glycero-1-phosphate cytidyltransferase	Methanococcoides burtonii	GHBZ-2296