2 GTP + H(+) <=> P(1),P(4)-bis(5'-guanosyl) tetraphosphate + diphosphate
2 gtp + h(+) <=> p(1),p(4)-bis(5'-guanosyl) tetraphosphate + diphosphate
2 GTP + H(+) <=> P(1),P(4)-bis(5'-guanosyl) tetraphosphate + diphosphate
2 gtp + h(+) <=> p(1),p(4)-bis(5'-guanosyl) tetraphosphate + diphosphate