title: Cyclase
text: # Cyclase
  
  A cyclase is an enzyme, almost always a lyase, that catalyzes a chemical reaction to form a cyclic compound. Important cyclase enzymes include:
  
  * Adenylyl cyclase, which forms cyclic AMP from adenosine triphosphate (EC 4.6.1.1)
     * ADCY1
     * ADCY2
     * ADCY3
     * ADCY4
     * ADCY5
     * ADCY6
     * ADCY7
     * ADCY8
     * ADCY9
     * ADCY10
  * Guanylyl cyclase, which forms cyclic GMP from guanosine triphosphate (EC 4.6.1.2)
     * GUCY1A2
     * GUCY1A3
     * GUCY1B3
     * Guanylate cyclase 2C
     * Guanylate cyclase 2D
     * Guanylate cyclase 2F
     * NPR1
     * NPR2
  * Protein cyclase, a ligase enzyme that produces backbone-cyclised proteins by intramolecular transpeptidation
  