Adenylate kinase (also known as ADK or myokinase) is a phosphotransferase enzyme that catalyzes the production of ATP from ADP, a process involved in cellular energy homeostasis (see the "Biological homeostasis" section of "Homeostasis"). The reaction catalyzed is:

2 ADP ⇔ ATP + AMP

Cellular respiration | EC 2.7.4

Adenylat-Kinase