Ligand-dependent G protein dynamics underlying opioid signaling efficacy
Jonathan C. Deutsch, Daniel Hilger, John Janetzko, Charles M. Schroeder, Steven Chu, Brian K. Kobilka, Rabindra V. Shivnaraine
This study uses smFRET to show that opioid ligands modulate Gi protein conformational dynamics, with higher-efficacy agonists promoting open, low-nucleotide-affinity states.
bioRxiv · Jun 30, 2025 · PreprintBiophysics