The 50 most significant moments of Internet history. The Internet has revolutionised the way we live, over almost 50 years of development. In this feature, we detail the 50 defining moments we feel are most significant to the Web. Up Next No faking it, Facebook rakes it in.
Inositol trisphosphate or inositol 1,4,5-trisphosphate (also commonly known as triphosphoinositol; abbreviated InsP3 or Ins3P or IP3), together with diacylglycerol (DAG), is a secondary messenger molecule used in signal transduction and lipid signaling in biological cells.
IP3 Opens the Floodgates. Electrical signals from neurons are not the only things that can cause calcium to be released in a cell. An external signal, such as a hormone molecule floating freely outside a cell, can bind to a protein receptor that is embedded in the cellâs outer membrane, called the plasma membrane.