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Curr Biol. 2002 Mar 19;12(6):R215-7.

Signal amplification: let's turn down the lights.

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1
MRC Laboratory of Molecular Biology, Cambridge, UK. LL1@mrc-lmb.cam.ac.uk

Abstract

G protein activation by membrane-bound receptors initiates a chain reaction that amplifies cellular responses to external signals. In retinal photoreceptors, amplification by the phototransduction cascade is regulated by quickly switching off the visual pigment that acts as the receptor for light.

PMID:
11909550
[Indexed for MEDLINE]
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