G protein coupled growth factor receptor tyrosine kinase: no longer an oxymoron

作者: Pradipta Ghosh

DOI: 10.1080/15384101.2015.1066538

关键词: Receptor Protein-Tyrosine KinasesReceptor tyrosine kinaseG protein-coupled receptorBiologyCell biologyHeterotrimeric G proteinG protein-coupled receptor kinaseGTPase-activating proteinG proteinSignal transduction

摘要: Environmental cues are transmitted to the interior of cell via a complex network signaling hubs. Receptor tyrosine kinases (RTKs) and trimeric G proteins 2 such major hubs in eukaryotes. Canonical signal transduction is spatially temporally restricted, i.e., triggered exclusively at plasma membrane (PM) by agonist activation G-protein-coupled receptors (GPCRs) process that completes within few hundred milliseconds. Recently, rapidly emerging paradigm has revealed non-canonical pathway for non-receptor GEF, GIV/Girdin, distinctive temporal spatial features. Such can be multiple growth factor RTKs, occur PM on internal membranes discontinuous with PM, continue prolonged periods time. The molecular mechanisms govern protein relevance this new health disease discussed.

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