Which of the following is a second messenger? A) ATP - adenosine triphosphate B) guanylyl cyclase C) IP₃ - inositol triphosphate D) PIP₂ - Phosphatidylinositol bisphosphate

Question

Quizplus · Accepted Answer

Inositol triphosphate (IP3) is a second messenger that is produced in response to extracellular signals and triggers a cascade of intracellular signaling events. Both ATP and guanylyl cyclase are involved in producing second messengers, but they are not themselves considered second messengers. Phosphatidylinositol bisphosphate (PIP2) can be cleaved to produce second messengers, but PIP₂ is not a recognized abbreviation for this molecule.

Which of the Following Is a Second Messenger