Which are the signals transduction cascades?

- Help the cell to differentiate and detect the enormous signals it receives.

- Also it augments the signals incorporate them into a specific response in

the cell’s interior like expression of a particular gene or enzymatic activity.

Extracellular signals present an effectual information metabolism by means of the

following steps.

- The onset of signal transduction starts with the synthesis of the

signaling molecule by the signaling cell.

- It is released out of the cell and transported to the target cell.

- The specific receptor protein in the target cell detects and

receives the signal, thus leads to the development of a receptorsignal

complex.

- This complex triggers the interior of the cell to produce the

required response like production of an enzyme, or changes in the function of the cell. Here the signal received in the form of a

particular chemical substance is converted (transduced) into

other chemical forms.

- The signaling process comes to an end when the signal is

removed, as a result the cellular response also terminates.

Extracellular signal → Reception → Amplification → Transduction → Response

The most important molecules which participate in the signal transduction are

hormones, pheromones, neurotransmitters, growth factors, cell surface receptors,

and the second messengers like cyclicAMP (cAMP).