G-protein linked receptor

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 G-protein linked receptors, also known as G-protein Coupled receptors, are a family of receptor signal transducers which are involved in signalling pathways within cells.[1] Subtypes, each with an endogenous agonist, are involved in maintaining physiological systems such as rhodopsin in rod cells required for vision.[2]


Structure

The structure of these proteins comprises of seven transmembrane helices with an extracellular ligand binding domain and an intracellular G-protein binding domain.[3]


References

  1. Cascieri.Fong.Graziano.Tota.Candelore.Strader. (1996) ‘Signaling through G-Protein-coupled Receptors’, pg93, in Heldin,C. Purton,M and International Union of Biochemistry and Molecular Biology. (ed) Signal Transduction, London: Chapman &amp; Hall in association with the IUBMB
  2. Cascieri.Fong.Graziano.Tota.Candelore.Strader. (1996) ‘Signaling through G-Protein-coupled Receptors’, pg94, in Heldin,C. Purton,M and International Union of Biochemistry and Molecular Biology. (ed) Signal Transduction, London: Chapman &amp; Hall in association with the IUBMB
  3. Cascieri.Fong.Graziano.Tota.Candelore.Strader. (1996) ‘Signaling through G-Protein-coupled Receptors’, pg94, in Heldin,C. Purton,M and International Union of Biochemistry and Molecular Biology. (ed) Signal Transduction, London: Chapman &amp; Hall in association with the IUBMB