Adenylyl cyclase
Adenyl Cyclase is the enzyme that converts ATP into Cyclic AMP (cAMP) which is a secondary messenger. It is an integral membrane protein that has the structure of two bundles of six transmembrane segments and two catalytic domains that extend as loops into the cytoplasm. The enzyme can exist in at least 9 isoforms that are regulated in different ways by different G protein coupled receptors [1].
References
- ↑ Bowen R November 29th 2003 http://www.vivo.colostate.edu/hbooks/molecules/cyclase.html