DHHC protein-dependent palmitoylation protects regulator of G-protein signaling 4 from proteasome degradation.
DHHC protein-dependent palmitoylation protects regulator of G-protein signaling 4 from proteasome degradation.
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DOI:
10.1016/j.febslet.2010.10.052
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发表时间:
2010-11-19
期刊:
影响因子:
3.5
通讯作者:
Tu Y
中科院分区:
文献类型:
--
作者:
Wang J;Xie Y;Wolff DW;Abel PW;Tu Y
Regulator of G-protein signaling 4 (RGS4), an intracellular modulator of G-protein coupled receptor (GPCR)-mediated signaling, is regulated by multiple processes including palmitoylation and proteasome degradation. We found that co-expression of DHHC acyltransferases (DHHC3 or DHHC7), but not their acyltransferase-inactive mutants, increased expression levels of RGS4 but not its Cys2 to Ser mutant (RGS4C2S). DHHC3 interacts with and palmitoylates RGS4 but not RGS4C2S in vivo. Palmitoylation prolongs the half-life of RGS4 by over 8-fold and palmitoylated RGS4 blocked α1A-adrenergic receptor -stimulated intracellular Ca2+ mobilization. Together, our findings revealed that DHHC proteins could regulate GPCR-mediated signaling by increasing RGS4 stability. MINT-8049215: Rgs4 (uniprotkb:P49799) physically interacts (MI:0915) with DHHC3 (uniprotkb:Q8R173) by anti tag coimmunoprecipitation (MI:0007)
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DOI:
10.1073/pnas.95.10.5584
发表时间:
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影响因子:
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