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GPCRs Signaling Directly Through Src-Family Kinases

A wide range of extracellular signals are transduced by G protein–coupled receptors (GPCRs). When activated by ligands, GPCRs can activate associated heterotrimeric guanine nucleotide–binding proteins (G proteins), which in turn act on various effectors. Increasing evidence indicates that GPCRs also signal independently of heterotrimeric G proteins. Several GPCRs directly interact with Src-family kinases. Here, we discuss the evidence for direct interaction and activation of Src-family kinases by GPCRs and data that suggest that agonist dosage provides a mechanism by which GPCRs can switch between G protein–dependent and G protein–independent signaling.

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Classifications


Resource Type: Bibliography, Diagram, Illustration, Journal article/Issue, Review
Audience Level: Undergraduate upper division 15-16, Graduate, Professional (degree program)

Author and Copyright


Authors and Editors: Deirdre McGarrigle of Department of Physiology, Cornell University Weill Medical College, Xin-Yun Huang of Department of Physiology, Cornell University Weill Medical College
Publisher: American Association for the Advancement of Science
Format: application/pdf, image/gif, image/jpeg, text/html
Copyright and other restrictions: Yes
Cost: Yes

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Collection:
STKE/Science Signaling


     
   

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