Which of the following substances acts to increase the release of Ca2+ from endoplasmic reticulum?
Ans. A. Inositol triphosphateInositol triphosphate (IP3 ) and diacylglycerol (DAG) are second messengers for G protein coupled receptors. IP3 stimulates release of calcium from endoplasmic reticulum. DAG activates protein kinase C.
Inositol triphosphate
Parathyroid hormone
1,25 dihydroxy cholecalciferol
Diacylglycerol
Endocrinology