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Yan W, Sunavala G, Rosenzweig S, Dasso M, Brand JG, Spielman AI: Bitter taste transduced by PLC-beta (2)-dependent rise in IP (3) and alpha-gustducin-dependent fall in cyclic nucleotides. Am J Physiol Cell Physiol. 2001 Apr;280(4):C742-51.
Additionally, a taste-enriched G protein gamma-subunit, Ggamma (13), colocalizes with Galpha (gust) and mediates the denatonium-stimulated production of inositol 1,4,5-trisphosphate (IP (3)).
Using quench-flow techniques, we show here that the bitter stimuli, denatonium and strychnine, induce rapid (50-100 ms) and transient reductions in cAMP and cGMP and increases in IP (3) in murine taste tissue. |
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