ENTRY       EC 2.7.6.5
NAME        GTP pyrophosphokinase
            Stringent factor
            Guanosine 3',5'-polyphosphate synthase
CLASS       Transferases
            Transferring phosphorus-containing groups
            Diphosphotransferases
SYSNAME     ATP:GTP 3'-pyrophosphotransferase
REACTION    ATP + GTP = AMP + Guanosine 3'-diphosphate 5'-triphosphate
SUBSTRATE   ATP
            GTP
            GDP
PRODUCT     AMP
            Guanosine 3'-diphosphate 5'-triphosphate
            Guanosine 3',5'-bis(diphosphate)
COMMENT     GDP can also act as acceptor
PATHWAY     PATH: MAP00230  Purine metabolism
GENES       ECO: b2784(relA)
            HIN: HI0334(relA)
            BSU: relA
DBLINKS     University of Geneva ENZYME DATA BANK: 2.7.6.5
            WIT (What Is There) Metabolic Reconstruction: 2.7.6.5
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