Human Gene Set: BIOCARTA_BARRESTIN_PATHWAY

For the Mouse gene set with the same name, see BIOCARTA_BARRESTIN_PATHWAY

Standard name BIOCARTA_BARRESTIN_PATHWAY
Systematic name M7772
Brief description b-arrestins in GPCR Desensitization
Full description or abstract Role of -arrestins in the desensitization, sequestration and intracellular trafficking of GPCRs. Homologous desensitization of GPCRs (1) results from the binding of -arrestins (-arr) to agonist -occupied receptors following phosphorylation of the receptor by GRKs. -arrestin binding sterically precludes coupling between the receptor and heterotrimeric G proteins, leading to termination of signaling by G proteins effectors. Receptor-bound -arrestins also act as adapter proteins, binding to components of the clathrin endocytic machinery including clathrin, 2-adaptin (AP-2). Receptor sequestration (2) reflects the dynamin (Dyn)-dependent endocytosis of GPCRs via clathrin-coated pits. Once internalized, GPCRs exhibit two distinct patterns of -arrestin interaction. `Class A' GPCRs, for example the 2 adrenergic receptor, rapidly dissociate from -arrestin upon internalization. These receptors are trafficked to an acidified endosomal compartment, wherein the ligand is dissociated and the receptor dephosphorylated by a GPCR-specific protein phosphatase PP2A isoform, and are subsequently recycled to the plasma membrane (3). `Class B' receptors, for example the angiotensin II AT1a receptor, form stable receptor--arrestin complexes. These receptors accumulate in endocytic vesicles and are either targeted for degradation or slowly recycled to the membrane via as yet poorly defined routes.
Collection C2: Curated
      CP: Canonical Pathways
            CP:BIOCARTA: BioCarta Pathways
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External links https://data.broadinstitute.org/gsea-msigdb/msigdb/biocarta/human/h_bArrestinPathway.gif
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Source species Homo sapiens
Contributed by BioCarta
Source platform or
identifier namespace		 HUMAN_SEQ_ACCESSION
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Version history 7.0: Changed members. Upgraded to final version of Biocarta.


License Terms for BioCarta data in MSigDB

MSigDB gene sets derived from BioCarta pathways are protected by copyright, (c) 2000-2017 BioCarta, all rights reserved. They are provided under license to the Broad Institute, Inc. with qualified permission to include in this release, subject to Biocarta's "Disclaimer of Liability and of Warranties" (formerly found at www.biocarta.com). Inclusion of these gene sets is conditioned upon acknowledgment and retention of the aforementioned copyright, and agreement to such disclaimer. The BioCarta derived gene sets are in the MSigDB C2 and M2 collections, and can be recognized by the "BIOCARTA_" prefix in their name.

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