| ATP adenylyltransferase | |
| Ec Number: | 2.7.7.53 |
| Cas Number: | 96697-71-1 |
| Go Code: | 0003877 |
In enzymology, an ATP adenylyltransferase is an enzyme that catalyzes the chemical reaction
ADP + ATP
\rightleftharpoons
Thus, the two substrates of this enzyme are ADP and ATP, whereas its two products are phosphate and P1,P4-bis(5'-adenosyl) tetraphosphate.
This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is ADP:ATP adenylyltransferase. Other names in common use include bis(5'-nucleosyl)-tetraphosphate phosphorylase (NDP-forming), diadenosinetetraphosphate alphabeta-phosphorylase, adenine triphosphate adenylyltransferase, diadenosine 5',5'"-P1,P4-tetraphosphate alphabeta-phosphorylase, (ADP-forming), and dinucleoside oligophosphate alphabeta-phosphorylase. This enzyme participates in purine metabolism.