GMP synthase

GMP synthase (, xanthosine-5'-phosphate—ammonia ligase, guanylate synthetase, XMP aminase, xanthosine 5'-monophosphate aminase) is an enzyme with system name xanthosine-5'-phosphate:ammonia ligase (AMP-forming). This enzyme catalyses the following chemical reaction


 * ATP + XMP + NH3 $$\rightleftharpoons$$ AMP + diphosphate + GMP