The signalling processing occurs in the brain with the helps of different receptors, proteins and hormones. These receptors determines the taste sensation, visual and hearing sensation as well.
In case of the increase in the level of the diacylglycerol, the Gqalpha trimeric G protein bounds to the GTP. This subunit helps in the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) to diacyl glycerol (DAG) and inositol trisphosphate (IP3) by activating the enzyme known as phospholipase C.
