4.6.1.17	GTP	-	
4.6.1.17	additional information	the GTP molecule first binds to MoaA and an intermediate formamidopyrimidine-type compound is generated which is subsequently used by MoaC. MoaC catalyzes the release of diphosphate from the formamidopyrimidine-type compound and the formation of the cyclic phosphate of precursor Z, which is formed either via the formation of intermediate compound E (formamido-type) or PBM (pteridinebenzomonophosphate)