Adenylate Cyclase

Adenylyl cyclases (formerly adenylate cyclases) are important mediators between messengers (hormones), which bind to the outside of the cell membrane, and cell-internal messengers ("second messengers"), which transmit the effect of these hormones within the cell.

https://de.wikipedia.org/wiki/Adenylylcyclasen _{(Wikipedia CC-by-sa-3.0)}