INOSITOL  1,4,5-TRISPHOSPHATE
											4
																																4
					HO
																																									P
																				P
								3
															5												3
																																					5
																															IP3
							2
														6												2
				HO
																																				6
																		OH
											1
																																1
																			HYDROLYSIS
		PLC
																																											PHOSPHATIDYLINOSITOLS ARE HYDROLYSED BY PHOSPHOLIPASE C INTO TWO SECOND MESSENGERS
																									HO
																																						1,2-DIACYLGLYCEROL
			PHOSPHATIDYLINOSITOL