In the nitric oxide signaling pathway,nitric oxide activates an enzyme that can convert many molecules of GTP into molecules of cGMP.cGMP is a small molecule that can diffuse through the cytoplasm and bind to an enzyme called protein kinase G (PKG).Binding of cGMP to PKG leads to a change in the confirmation of PKG that leads to its activation.What type of signaling molecule is cGMP?
A)Scaffold
B)Adapter protein
C)Second messenger
D)Enzyme

Question

Quizplus · Accepted Answer

cGMP is a second messenger in the nitric oxide signaling pathway, which means it is a small molecule that relays the signal of the primary messenger (nitric oxide) from the cell membrane to intracellular targets such as PKG. It is not a scaffold, adapter protein, or enzyme.

In the Nitric Oxide Signaling Pathway,nitric Oxide Activates an Enzyme