Where do DAG and IP3 originate?

They are formed by phosphorylation of cAMP.
They are ligands expressed by signaling cells.
They are hormones that diffuse through the plasma membrane to stimulate protein production.
They are the cleavage products of the inositol phospholipid, PIP2.

Phosphatidylinositol4,5-bisphosphate (PIP2) is the phospholipid present in plasma membrane. This lipid is important for the cell communication and cell signalling process.

The PIP2 can cleave and give two main products are DAG (diacylglycerol) and IP3 ( inositol 1,4,5-trisphosphate). These two molecules are important for the cell signalling.

Thus, the correct answer is option (4).

Where do DAG and IP3 originate? They are formed by phosphorylation of cAMP. They are ligands expressed by signaling cells. They are hormones that diffuse through the plasma membrane to stimulate protein production. They are the cleavage products of the inositol phospholipid, PIP2.

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Where do DAG and IP3 originate?

They are formed by phosphorylation of cAMP.
They are ligands expressed by signaling cells.
They are hormones that diffuse through the plasma membrane to stimulate protein production.
They are the cleavage products of the inositol phospholipid, PIP2.