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

Systematic name M668
Brief description Role of b-arrestins in the activation and targeting of MAP kinases
Full description or abstract The binding of -arrestins to agonist-occupied GPCRs triggers the assembly of a MAP kinase activation complex using -arrestin as a scaffold, with subsequent activation of a -arrestin-bound pool of ERK1/2. The receptor-arrestinERK complexes are localized to endosomal vesicles, and their formation does not result in nuclear translocation of activated ERK1/2 or stimulation of cell proliferation. The function of -arrestin-bound ERK1/2 is presently unknown. Activation of ERK1/2 by -arrestin scaffolds may favor the phosphorylation of plasma membrane, cytosolic, or cytoskeletal ERK1/2 substrates, or it may lead to transcriptional activation through the ERK-dependent activation of other kinases. The model depicts -arrestin scaffolding of the ERK1/2 MAP kinase cascade, based upon data obtained with the protease-activated PAR2 and angiotensin AT1a receptors. A similar mechanism has been proposed for regulation of the JNK3 MAP kinase cascade by AT1a receptors.
Collection C2: Curated
      CP: Canonical Pathways
            CP:BIOCARTA: BioCarta Pathways
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Source species Homo sapiens
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Version history 7.0: Changed members. Upgraded to final version of Biocarta.

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