Guaninnucleotid-bindende Proteine als membranäre Signaltransduktionskomponenten und Regulatoren enzymatischer Effektoren
1988
The vast majority of extracellular signals alters cell function by activating cell surface receptors. The transmembranous signalling process initiated by an activated receptor leads to the generation of an intracellular signal and eventually to a cellular response. In contrast to receptors that are permanently coupled to an enzyme or an ion channel representing the effector, a large number of surface receptors for hormones, neurotransmitters and receptors for exogenous chemical or physical stimuli reversibly interacts with membranous signal transduction components which, in turn, regulate intracellular messenger-generating effectors.
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