Guanylyl cyclase is involved in the signal transduction in plants. Phytochrome activation leads to an increase in cytosolic Ca2+ levels. Aside from this, phytochrome also undergoes a change in shape. This leads to the subsequent activation of guanylyl cyclase.
A. is linked with angina.
B. like adenylyl cyclase, converts NTPs to CNTPs.
C. causes a cGMP cascade that activates protein kinase C.
D. and adenylyl cyclase can bind extracellular signal molecules.