Intracellular signalling: Is PIP(2) a messenger too?
The phospholipid phosphatidylinositol (4,5) bisphosphate (PIP(2)) has recently been shown to act downstream of the small G proteins Rac and Arf. Different effectors may be employed in each case, suggesting that PIP(2) has multiple signalling roles.
ADP-Ribosylation Factors↗