2 ATP + H(+) => P(1),P(4)-bis(5'-adenosyl) tetraphosphate + diphosphate
2 atp + h(+) => p(1),p(4)-bis(5'-adenosyl) tetraphosphate + diphosphate
2 ATP + H(+) => P(1),P(4)-bis(5'-adenosyl) tetraphosphate + diphosphate
2 atp + h(+) => p(1),p(4)-bis(5'-adenosyl) tetraphosphate + diphosphate