ADP + ATP + H(+) <=> P(1),P(4)-bis(5'-adenosyl) tetraphosphate + phosphate
adp + atp + h(+) <=> p(1),p(4)-bis(5'-adenosyl) tetraphosphate + phosphate
ADP + ATP + H(+) <=> P(1),P(4)-bis(5'-adenosyl) tetraphosphate + phosphate
adp + atp + h(+) <=> p(1),p(4)-bis(5'-adenosyl) tetraphosphate + phosphate