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Open AccessJournal ArticleDOI

Ubiquitination of β-Arrestin Links Seven-transmembrane Receptor Endocytosis and ERK Activation

TLDR
Although β-arrestin ubiquitination is dispensable for β-Arrestin cytosol to membrane translocation and its “constitutive” interactions with some cytosolic proteins, it nevertheless is a prerequisite both for the formation of tight complexes with 7TMRs in vivo and for membrane compartment interactions that are crucial for downstream endocytic and signaling processes.
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β-arrestin-mediated receptor trafficking and signal transduction

TL;DR: The traditional and novel functions of β-arrestins are assessed and the molecular attributes that might facilitate multiple interactions in regulating cell signaling and receptor trafficking are discussed.
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Therapeutic potential of β-arrestin- and G protein-biased agonists

TL;DR: The diversity of G protein- and β-arrestin-mediated functions and the therapeutic potential of selective targeting of these in disease states are highlighted.
Journal ArticleDOI

Beyond Desensitization: Physiological Relevance of Arrestin-Dependent Signaling

TL;DR: The role of arrestin-dependent heptahelical G protein-coupled receptors in the human genome has been investigated in this article. But, the role of the arrestin binding is not yet fully understood.
Journal ArticleDOI

Endosomes: A legitimate platform for the signaling train

TL;DR: Selective disruption of receptor signaling in endosomes, which can be accomplished by targeting endosomal-specific signaling pathways or by selective delivery of drugs to the endosome network, may provide novel therapies for disease.
Journal ArticleDOI

The Diverse Roles of Arrestin Scaffolds in G Protein-Coupled Receptor Signaling.

TL;DR: The structure–function relationships that enable arrestins to perform their diverse roles are examined, addressing arrestin structure at the molecular level, the relationship between arrestin conformation and function, and sites of interaction between arrestins, GPCRs, and nonreceptor-binding partners.
References
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Journal ArticleDOI

TAK1 is a ubiquitin-dependent kinase of MKK and IKK

TL;DR: The purification and identification of TRIKA2, which is composed of TAK1, TAB1 and TAB2, a protein kinase complex previously implicated in IKK activation through an unknown mechanism, indicate that ubiquitination has an important regulatory role in stress response pathways, including those of IKK and JNK.
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Transduction of receptor signals by beta-arrestins.

TL;DR: Another previously unappreciated strategy used by the receptors to regulate intracellular signaling pathways is indicated, which regulates aspects of cell motility, chemotaxis, apoptosis, and likely other cellular functions through a rapidly expanding list of signaling pathways.
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The ubiquitin system for protein degradation

TL;DR: The Ubiquitin-C-TERMINAL HYDROLASES study highlights the importance of knowing the carrier and removal status of these components in the preparation of the UBIQUITIN-MEDIATED DEGRADATION.
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Beta-arrestin acts as a clathrin adaptor in endocytosis of the beta2-adrenergic receptor.

TL;DR: The results show that β-arrestin functions as an adaptor in the receptor-mediated endocytosis pathway, and suggest a general mechanism for regulating the trafficking of G-protein-coupled receptors.
Journal ArticleDOI

β-Arrestins and Cell Signaling

TL;DR: The signaling capacities of these versatile adapter molecules are reviewed and the possible implications for cellular processes such as chemotaxis and apoptosis are discussed.
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