Receptor - PERLA Health


A receptor is a protein that is able to bind a signaling molecule, a so-called ligand. It is often compared with a key and a lock – the signaling molecule is the key, and when it reaches the receptor, the lock, it leads to an effect. In cell signaling, this effect is often a signaling cascade in the cell, leading to a response.


  1. Khan Academy. Ligands & receptors. (accessed 8. August 2020)
  2. Tripathi A. et al. Molecular Docking: From Lock and Key to Combination Lock. J Mol Med Clin Appl. 2017; 2(1): 10.

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