β-Arrestins and G protein-coupled receptor trafficking

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Updated: May 14, 2026

Parallel Interrogation of β-Arrestin2 Recruitment for Ligand Screening on a GPCR-Wide Scale using PRESTO-Tango Assay
09:03

Parallel Interrogation of β-Arrestin2 Recruitment for Ligand Screening on a GPCR-Wide Scale using PRESTO-Tango Assay

Published on: March 10, 2020

Dong Soo Kang1, Xufan Tian, Jeffrey L Benovic

  • 1Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.

Methods in Enzymology
|January 29, 2013
PubMed

Insights

Arrestins are crucial proteins regulating G protein-coupled receptor (GPCR) signaling and trafficking. This chapter details methods for studying beta-arrestin-mediated GPCR trafficking, essential for understanding cellular communication.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Arrestins act as adaptor proteins regulating G protein-coupled receptor (GPCR) signaling and trafficking.
  • Mammalian arrestins include two visual (arrestin-1, arrestin-4) and two nonvisual (β-arrestin1, β-arrestin2) types.
  • Nonvisual arrestins are ubiquitously expressed and play key roles in GPCR regulation.

Purpose of the Study:

  • To provide an overview of reagents and techniques for studying β-arrestin-mediated receptor trafficking.
  • To elucidate the mechanisms underlying arrestin-mediated GPCR endocytosis.

Main Methods:

  • Overview of established reagents and experimental techniques.
  • Focus on studying β-arrestin interactions with GPCRs, clathrin, and adaptor protein 2.
  • Methods involve analyzing phosphoinositide involvement (PIP(2)/PIP(3)) and conformational changes in β-arrestin.

Main Results:

  • β-arrestin-mediated GPCR endocytosis requires coordinated interactions with clathrin, AP2, and phosphoinositides.
  • A conformational change in β-arrestin upon binding to activated GPCRs facilitates these interactions.
  • Established techniques allow for detailed investigation of these molecular events.

Conclusions:

  • β-arrestins are critical regulators of GPCR signaling and trafficking.
  • Understanding β-arrestin-mediated trafficking is vital for comprehending cellular responses to external stimuli.
  • The presented overview equips researchers with tools to study these complex pathways.

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