Signal Transduction là gì


Signal transduction

From Wikipedia, the free encyclopedia

An overview of major signal transduction pathways.

Signal transduction occurs when an extracellular signaling[1] molecule activates a cell surface receptor. In turn, this receptor alters intracellular molecules creating a response.[2] There are two stages in this process:

  1. A signaling molecule activates a specific receptor protein on the cell membrane.
  2. A second messenger transmits the signal into the cell, eliciting a physiological response.

In either step, the signal can be amplified. Thus, one signalling molecule can cause many responses.[3] A signal transduction functions much like a switch

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