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VPS26 Moonlights as a β-Arrestin-like Adapter for a 7-Transmembrane RGS Protein in Arabidopsis thaliana

Journal Article · · Biochemistry
 [1];  [1];  [1];  [1];  [2];  [3];  [1]
  1. University of North Carolina at Chapel Hill, NC (United States)
  2. MRC Laboratory of Molecular Biology, Cambridge (United Kingdom); University of Cambridge (United Kingdom)
  3. MRC Laboratory of Molecular Biology, Cambridge (United Kingdom)
Extracellular signals perceived by 7-transmembrane (7TM)-spanning receptors initiate desensitization that involves the removal of these receptors from the plasma membrane. Agonist binding often evokes phosphorylation in the flexible C-terminal region and/or intracellular loop 3 of many 7TM G-protein-coupled receptors in animal cells, which consequently recruits a cytoplasmic intermediate adaptor, β-arrestin, resulting in clathrin-mediated endocytosis (CME) and downstream signaling such as transcriptional changes. Some 7TM receptors undergo CME without recruiting β-arrestin, but it is not clear how. Arrestins are not encoded in the Arabidopsis thaliana genome, yet Arabidopsis cells have a well-characterized signal-induced CME of a 7TM protein, designated Regulator of G Signaling 1 (AtRGS1). Here we show that a component of the retromer complex, Vacuolar Protein Sorting-Associated 26 (VPS26), binds the phosphorylated C-terminal region of AtRGS1 as a VPS26A/B heterodimer to form a complex that is required for downstream signaling. We propose that VPS26 moonlights as an arrestin-like adaptor in the CME of AtRGS1.
Research Organization:
University of North Carolina at Chapel Hill, NC (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
FG02-05ER15671
OSTI ID:
2475196
Alternate ID(s):
OSTI ID: 2478058
Journal Information:
Biochemistry, Journal Name: Biochemistry Journal Issue: 22 Vol. 63; ISSN 0006-2960
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (62)

Invited review: Activation of G proteins by GTP and the mechanism of Gα‐catalyzed GTP hydrolysis journal May 2016
Studying molecular interactions via capillary electrophoresis and microscale thermophoresis: A review journal April 2023
Proteomic applications of automated GPCR classification journal August 2007
Standard protocol for mass photometry experiments journal March 2021
Reciprocal Encoding of Signal Intensity and Duration in a Glucose-Sensing Circuit journal February 2014
How GPCR Phosphorylation Patterns Orchestrate Arrestin-Mediated Signaling journal December 2020
GPCR desensitization: Acute and prolonged phases journal January 2018
d -Glucose sensing by a plasma membrane regulator of G signaling protein, At RGS1 journal September 2008
G protein–coupled receptor interactions with arrestins and GPCR kinases: The unresolved issue of signal bias journal September 2022
Phosphorylation Dynamics in a flg22-Induced, G Protein–Dependent Network Reveals the AtRGS1 Phosphatase journal February 2024
How bacteria overcome flagellin pattern recognition in plants journal June 2022
New insights into GPCR coupling and dimerisation from cryo-EM structures journal June 2023
Structural Basis of Arrestin-Dependent Signal Transduction journal June 2018
β-arrestin-mediated receptor trafficking and signal transduction journal September 2011
Chemical Synthesis of a Full-Length G-Protein-Coupled Receptor β2-Adrenergic Receptor with Defined Modification Patterns at the C-Terminus journal October 2021
A flagellin-induced complex of the receptor FLS2 and BAK1 initiates plant defence journal July 2007
Endocytosis of the seven-transmembrane RGS1 protein activates G-protein-coupled signalling in Arabidopsis journal September 2012
CCC- and WASH-mediated endosomal sorting of LDLR is required for normal clearance of circulating LDL journal March 2016
The retromer subunit Vps26 has an arrestin fold and binds Vps35 through its C-terminal domain journal May 2006
Ligand-triggered de-repression of Arabidopsis heterotrimeric G proteins coupled to immune receptor kinases journal March 2018
Molecular identification of a BAR domain-containing coat complex for endosomal recycling of transmembrane proteins journal October 2019
Molecular basis of β-arrestin coupling to formoterol-bound β1-adrenoceptor journal June 2020
Structure of the class D GPCR Ste2 dimer coupled to two G proteins journal December 2020
Highly accurate protein structure prediction with AlphaFold journal July 2021
Tail engagement of arrestin at the glucagon receptor journal August 2023
Disruption of endocytosis through chemical inhibition of clathrin heavy chain function journal April 2019
The power and pitfalls of AlphaFold2 for structure prediction beyond rigid globular proteins journal June 2024
A structural biology community assessment of AlphaFold2 applications journal November 2022
Visualizing the GPCR Network: Classification and Evolution journal November 2017
GTPase acceleration as the rate-limiting step in Arabidopsis G protein-coupled sugar signaling journal October 2007
A unique PDZ domain and arrestin-like fold interaction reveals mechanistic details of endocytic recycling by SNX27-retromer journal August 2014
Buried ionizable networks are an ancient hallmark of G protein-coupled receptor activation journal April 2015
Functional Reconstitution of an Atypical G Protein Heterotrimer and Regulator of G Protein Signaling Protein (RGS1) from Arabidopsis thaliana journal February 2011
Tyrosine phosphorylation switching of a G protein journal March 2018
An atypical heterotrimeric Gα protein has substantially reduced nucleotide binding but retains nucleotide-independent interactions with its cognate RGS protein and Gβγ dimer journal December 2019
Receptor Recycling by Retromer journal June 2023
GPCRdb in 2021: integrating GPCR sequence, structure and function journal December 2020
Cargo Recognition in Clathrin-Mediated Endocytosis journal November 2013
“Round Up the Usual Suspects”: A Comment on Nonexistent Plant G Protein-Coupled Receptors journal January 2013
Structure of Vps26B and Mapping of its Interaction with the Retromer Protein Complex journal December 2007
Nudge‐nudge, WNK‐WNK (kinases), say no more? journal June 2018
The Diverse Roles of Arrestin Scaffolds in G Protein–Coupled Receptor Signaling journal April 2017
Architecture and mechanism of metazoan retromer:SNX3 tubular coat assembly journal March 2021
A Seven-Transmembrane RGS Protein That Modulates Plant Cell Proliferation journal September 2003
High-Resolution Crystal Structure of an Engineered Human  2-Adrenergic G Protein-Coupled Receptor journal October 2007
Structural Basis for flg22-Induced Activation of the Arabidopsis FLS2-BAK1 Immune Complex journal October 2013
Noncanonical scaffolding of G αi and β-arrestin by G protein–coupled receptors journal March 2021
AlphaFold2 structures guide prospective ligand discovery journal June 2024
The Crystal Structure of a Self-Activating G Protein   Subunit Reveals Its Distinct Mechanism of Signal Initiation journal February 2011
Saltational evolution of the heterotrimeric G protein signaling mechanisms in the plant kingdom journal September 2016
Differential regulation of G protein signaling in Arabidopsis through two distinct pathways that internalize AtRGS1 journal August 2021
G Protein–Coupled Receptor Sorting to Endosomes and Lysosomes journal February 2008
Regulation of GPCRs by Endocytic Membrane Trafficking and Its Potential Implications journal February 2008
G protein-coupled receptor signaling: transducers and effectors journal September 2022
On the origins of arrestin and rhodopsin journal January 2008
QR code model: a new possibility for GPCR phosphorylation recognition journal March 2022
Ligand-induced dynamics of heterotrimeric G protein-coupled receptor-like kinase complexes journal February 2017
PRODIGY: A Contact-based Predictor of Binding Affinity in Protein-protein Complexes journal January 2017
The F238L Point Mutation in the Cannabinoid Type 1 Receptor Enhances Basal Endocytosis via Lipid Rafts journal July 2018
GPCR Signaling Regulation: The Role of GRKs and Arrestins journal February 2019
Diversity of retromer-mediated vesicular trafficking pathways in plants journal June 2023
Tracking transcription factor mobility and interaction in Arabidopsis roots with fluorescence correlation spectroscopy journal June 2016