Signal transduction

From cellbio
Revision as of 03:30, 4 December 2011 by Vipul (talk | contribs) (Created page with "==Definition== The term '''signal transduction''' refers to a two-step process by which a signal ''outside'' the cell can induce a response ''inside'' the cell. The two step...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Definition

The term signal transduction refers to a two-step process by which a signal outside the cell can induce a response inside the cell. The two steps are as follows:

  1. A signaling molecule (outside the cell) activates a cell surface receptor located on the cell membrane (and hence capable of interacting with the molecule).
  2. A messenger molecule transmits the signal from the cell membrane into the cell and elicit a physiological response within the cell.

The pathways by which this happens are termed signal transduction pathways.