ATP:ADP adenylyltransferase activity
Catalysis of the reaction: ADP + ATP = phosphate + P(1),P(4)-bis(5'-adenosyl)tetraphosphate.
GO:0070566
adenylyltransferase activity
is_a
AP-4-A phosphorylase activity
related
ATP adenylyltransferase activity
broad
adenine triphosphate adenylyltransferase activity
related
bis(5'-nucleosyl)-tetraphosphate phosphorylase (NDP-forming) activity
related
diadenosine 5',5'''-P(1),P(4)-tetraphosphate phosphorylase activity
related
diadenosine 5',5'''-P1,P4-tetraphosphate alphabeta-phosphorylase (ADP-forming)
related
diadenosine 5',5'''-P1,P4-tetraphosphate phosphorylase activity
related
diadenosinetetraphosphate alpha-beta-phosphorylase activity
related
diadenosinetetraphosphate alphabeta-phosphorylase activity
related
dinucleoside oligophosphate alphabeta-phosphorylase activity
related