Type of signaling

Second messenger

This is not second messenger

General term for a protein that binds a specific extracellular molecule (ligand) and initiates a response in the cell.

Short-range cell–cell communication via secreted local mediators that act on adjacent cells.

A signal relay chain involving multiple protein kinases, each of which is activated by phosphorylation and then phosphorylates the next protein kinase in the sequence.

Small molecule that is formed in the cytosol, or released into it, in response to an extracellular signal and that helps to relay the signal to the interior of the cell.

Molecule from outside the cell that communicates the behavior or actions of other cells in the environment and elicits an appropriate response.

Enzyme that transfers the terminal phosphate group of ATP to a specific amino acid of a target protein.

Small signal molecule secreted by the presynaptic nerve cell at a chemical synapse to relay the signal to the postsynaptic cell.

Enzyme that phosphorylates target proteins in response to a rise in intracellular cyclic AMP.

A Ca2+-dependent protein kinase that is activated by diacylglycerol.

******************** signaling

What is the importance of inositoltriphosphate (IP3)?

What cellular mechanism responds to its own signal of the cell (the cell produces a signaling molecule and at that time carries on its surface the receptors necessary for respond of the secreted ligand)?

What type of secondary messengers is formed from a specialized membrane lipid inositolphospholipid by the enzyme phospholipase C?

What is the importance of diacylglycerol (DAG)?