Proton ATPase

Proton ATPase, graphic representation

In the field of enzymology, a proton ATPase, or H+-ATPase, is an enzyme that catalyzes the following chemical reaction:

ATP + H
2O + H+
in ADP + phosphate + H+
out

The 3 substrates of this enzyme are ATP, H
2O, and H+
, whereas its 3 products are ADP, phosphate, and H+
.

Proton ATPases are divided into three groups[1] as outlined below:

  1. ^ Pedersen PL, Carafoli E (1987). "Ion motive ATPases. I. Ubiquity, properties, and significance to cell function". Trends in Biochemical Sciences. 12: 146–50. doi:10.1016/0968-0004(87)90071-5.