Title : New roles for RGS2, 5 and 8 on the ratio-dependent modulation of recombinant GIRK channels expressed in Xenopus oocytes.

Pub. Date : 1999 Jun 1

PMID : 10332086






4 Functional Relationships(s)
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1 Coexpression of RGS2, 5 and 8 accelerates the speed for ACh-mediated activation and deactivation of GIRK1/2 and GIRK1/4 currents. Acetylcholine potassium inwardly rectifying channel subfamily J member 3 L homeolog Xenopus laevis
2 Coexpression of RGS2, 5 and 8 accelerates the speed for ACh-mediated activation and deactivation of GIRK1/2 and GIRK1/4 currents. Acetylcholine potassium inwardly rectifying channel subfamily J member 3 L homeolog Xenopus laevis
3 Bordetella pertussis toxin completely abolished ACh-mediated current amplification of GIRK channels coexpressed with or without RGS2. Acetylcholine potassium inwardly rectifying channel subfamily J member 3 L homeolog Xenopus laevis
4 Two single point mutations in the RGS2 protein (RGS2(N109S) and RGS2(L180F)) reduced the acceleration of current amplification after ACh application on GIRK1/4 channels compared with RGS2 wild-type protein. Acetylcholine potassium inwardly rectifying channel subfamily J member 3 L homeolog Xenopus laevis