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on the mechanism of signal activation, ligand selectivity and allosteric modulation in angiotensin receptors Thus, we need to know much more about the structures of receptor-ligand complexes at high resolution. Recently, X-ray structures of both AngII receptors (AT1 and AT2 receptors) bound to peptide and non-peptide , as the basis of ligand selectivity, efficacy, and regulation of the molecular functions of the receptors This review covers the new data elucidating the structural dynamics of AngII receptors and how structural

2022 N-terminal alterations turn the gut hormone GLP-2 into an antagonist with gradual loss of GLP-2 receptor selectivity towards more GLP-1 receptor interaction "Background and purpose: To fully elucidate the regulatory role of the GLP-2 system in the gut and the bones, potent and selective GLP-2 receptor (GLP To examine selectivity, COS-7 cells expressing human GLP-1 or GIP receptors were assessed for cAMP accumulation

pro-inflammatory neutrophil response, signaling downstream of an agonist-activated G protein-coupled receptor Among the family of GPCR kinases (GRKs) that regulate receptor phosphorylation and signaling termination The medium chain fatty acid receptor GPR84 as well as formyl peptide receptor 2 (FPR2), receptors expressed

Rho1 signaling is activated by G-protein-coupled receptor (GPCR) signaling at the cell surface. The SG receptor that transduces the Fog signal into Rho1-dependent myosin activation has not been identified

Consider calcium flux assays: Teams often ask how to define fractional receptor activation, similar to It reflects: receptor density signaling efficiency assay sensitivity downstream amplification Not simply A ligand may show identical EC₅₀ values in two assays while engaging receptors through very different Kenakin reveals how scaled pharmacological metrics allow teams to interpret receptor signaling changes Pharmacologists contribute: rigorous assay interpretation mechanistic insight into receptor signaling

occupancy-limited modulation Linear plots with slope ≠ 1 demand investigation  — equilibration time, receptor Assay Sensitivity and System Configuration Receptor expression level is a strategic variable.

What if you could directly measure receptor internalization in physiologically relevant cells without These probes become brighter and have a longer lifespan as internalized receptors enter acidic endosomes—translating his team presented a data set that transformed everything: a clean, dose-dependent response of GLP-1 receptor

shown in beta cells 🚀 2025: Revvity launches pHSense A Day That Changed Everything: The Endogenous Receptor s second “aha” moment with pHSense came the day his team showed internalization of endogenous GLP-1 receptors It validated the broader goal: giving scientists tools to study receptors in their native, unmodified

Breakthroughs this week: 12th Adhesion GPCR Workshop (Düsseldorf, Sept 16–18, 2026); Free fatty acid receptor These sessions span foundational pharmacology, receptor biology, modeling, translational strategy, and Their capabilities span cAMP, β-arrestin recruitment, receptor internalization, calcium flux, ligand highlights how membrane context reshapes receptor behavior. Bitter taste receptors extend beyond taste biology.

GPCR , the global knowledge hub for G protein-coupled receptor (GPCR) research and education, today announced comprehensive GPCR assay portfolios, encompassing over 90% of the human GPCRome with assays for human receptors , species orthologs, and orphan receptors across various cellular backgrounds. support a wide range of mechanisms of action, including cAMP accumulation, β-arrestin recruitment, receptor

Significant advancements in the cellular biology of G protein-coupled receptors (GPCRs) about a novel biosensor shed light on the endosomal proteome associated with the δ-opioid receptor (DOR). In this study, the DOR receptor was genetically fused to APEX2, creating a DOR-APEX2 construct. the vicinity, allowing the capture of a snapshot of the endosomal proteome associated with the DOR receptor As the opioid crisis continues to challenge public health, insights gained from this research could inform

ATP and sugar monophosphates and the identification of a novel allosteric site on the vasopressin V2 receptor Discover how factors like restricted tissue diffusion and receptor density can dramatically alter drug The opioid crisis is evolving with the dangerous combination of fentanyl and the veterinary sedative Learn how fentanyl slows inhalation via opioid receptors, while xylazine prolongs exhalation through alpha-2 adrenergic receptors, creating a synergistic effect that drives overdose deaths.

August 2022 "Emerging evidence suggests that G protein-coupled receptor (GPCR) kinases (GRKs) are associated

High-throughput screening for receptor ligands was booming, and Sokhom was at the center of it. exploring signaling bias, and building a robust knowledge base in one of the most pharmacologically diverse receptor A Career Built on Consistency From CGRP receptor antagonists at BMS to opioid receptor research at Alkermes short-term thinkers often miss. _______________ Keyword Cloud: GPCR drug discovery , G protein-coupled receptors

publications:  Studies on active-state GPCR ensembles and their transducer coupling, biased angiotensin receptor The Revvity team asked a harder question: What if you could measure receptor internalization in native The Advantages Live-cell imaging:  visualize receptor–ligand interactions in real time, without disturbing Subtype specificity:  selectively track receptor subtypes in complex brain tissue. Why It Matters In the CNS, where receptor localization and real-time signaling shape therapeutic outcomes

They’re kinetic game-changers —compounds that rewrite the relationship between ligand , receptor , and Understanding how persistent binding affects receptor turnover, tissue penetration, and PK/PD relationships This PK/PD dissociation  means: Drug exposure may end, but receptor occupancy remains. get released next month, featuring real questions from discovery scientists tackling enzyme kinetics, receptor Corner & Secure Your Spot for the October 30 AMA Why Terry’s Corner Pipeline risk isn’t just at the receptor—it

critical components of the intracellular signaling pathways that mediate the effects of G protein-coupled receptors For example, μ opioid receptor (MOR) interacts with Gαi/o and Gαz subunits, which have a slow enzymatic ; enhancing the activity of the G protein that is coupled to the receptor and leading to a decrease in Senese, N.B., et al., Regulator of G-Protein Signaling (RGS) Protein Modulation of Opioid Receptor Signaling Traynor, Differential modulation of mu- and delta-opioid receptor agonists by endogenous RGS4 protein

October 2022 "Protease-activated receptor 2 (PAR2) is a G-protein-coupled receptor (GPCR) activated by Interestingly, unlike PAR2-AP, GB83 and trypsin induced sustained receptor endocytosis and PAR2 colocalization

Consider G-protein-coupled receptors-an expansive class of transmembrane signaling proteins that participate While early evidence for the role of oligomerization in receptor signaling came from ensemble biochemical for these techniques to advance our understanding of the role of oligomerization in G-protein-coupled receptor

Considering the central role of the serotonin 5-HT2A receptor in the distinct effects of psychedelics

CRAC Motif in Transmembrane Helix 2 Confers Cholesterol-Induced Thermal Stability to the Serotonin 1A Receptor "G protein-coupled receptors (GPCRs) constitute the largest class of membrane proteins that transduce The serotonin1A receptor is a crucial neurotransmitter receptor in the GPCR family involved in a multitude In addition, we showed that membrane cholesterol stabilizes the serotonin1A receptor against thermal consensus (CRAC) motif in transmembrane helix 2 in conferring the thermal stability of the serotonin1A receptor

September 2022 "G-protein-coupled receptors (GPCRs) are involved in a wide array of physiological and Here, we find that protease-activated receptor 4 (PAR4) unexpectedly acts as a potent oncogene, inducing

October 2022 "Over three decades of research have provided thorough insights into G protein-coupled receptor Agonist activation of the β2-adrenoceptor (β2AR) causes its S-nitrosylation that is required for the receptor

Acquired hypocalciuric hypercalcemia (AHH) is a rare disease caused by calcium-sensing receptor (CaSR

Orthosteric ligands preempt  natural signaling; they “take over” receptor behavior, forcing physiology Allosterics , in contrast, act more like tuning knobs—modulating receptor ensembles in partnership with The Dynamic Nature of Receptor Binding Forget the static “lock-and-key” metaphor. Ligands bounce in and out of receptor sites, competing dynamically. By stabilizing certain receptor states over others, ligands literally remodel the energy landscape.

studies of AlphaFold, RoseTTAFold and Modeller: a case study involving the use of G-protein-coupled receptors G-protein-coupled receptor (GPCR) proteins are particularly interesting since they are involved in numerous

GPCR Store, and a spotlight on the cryo-EM structure of the sweet taste receptor.   Ben Clements   In Episode 166, Ben Clements dives into opioid pharmacology, GPCR-targeted PAMs, and how Show off your receptor pride and support the mission. The official Dr. GPCR Store is live! A stunning cryo-EM structure of the sweet taste receptor (TAS1R2–TAS1R3) shows how aspartame and sucralose Biased signalling of Class B G protein-coupled receptor-targeted therapeutics .  

intracellular allosteric binding site (IABS) has recently been identified at several G protein-coupled receptors Starting from vercirnon, an intracellular C-C chemokine receptor type 9 (CCR9) antagonist and previous

September 2022 "Melanocortin 4 receptor (MC4R) is part of the leptin-melanocortin pathway and plays an We have previously reported that the MC4R forms homodimers, affecting receptor Gs signaling properties protein–protein interaction were conducted, confirming decreased homodimerization capacities of chimeric receptors Gq/11 signaling of chimeric receptors was analyzed using luciferase-based reporter gene (NFAT) assays that inhibiting homodimerization has a setmelanotide-like effect on Gq/11 signaling, with chimeric receptors

G protein-coupled receptors (GPCRs) transmit extracellular signals to the inside by activation of intracellular Different agonists can promote differential receptor-induced signaling responses - termed bias - potentially Here, we compared the efficacy of seven agonists to induce G protein, G protein-coupled receptor kinase 2 (GRK2), as well as arrestin3 binding to the muscarinic acetylcholine receptor M3 by utilizing FRET-based to avoid differences in receptor phosphorylation influencing arrestin recruitment.