Term Name:	GTP diphosphokinase activity
Synonyms:	(p)ppGpp synthetase I, (p)ppGpp synthetase II, ATP-GTP 3'-diphosphotransferase activity, ATP:GTP 3'-diphosphotransferase activity, GPSI, GPSII, GTP pyrophosphokinase activity, guanosine 3',5'-polyphosphate synthase activity, guanosine 5',3'-polyphosphate synthetase activity, guanosine pentaphosphate synthetase activity, ppGpp synthetase I activity, stringent factor activity
Definition:	Catalysis of the reaction: ATP + GTP = AMP + guanosine 3'-diphosphate 5'-triphosphate.
Ontology:	GO: Molecular Function [GO:0008728]    QuickGO    AmiGO