739-Dynamic Basis of G-Protein Recognition and Activation

Paper Talk · Apr 3, 2026 · 20m

This article describes a study using time-resolved cryo-electron microscopy to visualize the dynamic signaling processes of the human neurotensin receptor type 1 (NTSR1). The researchers captured the receptor in complex with various G-protein subtypes, revealing how the intracellular surface of the receptor reshapes itself to accommodate different partners. By analyzing over 20 intermediate states, the authors identified a non-canonical (NC) coupling state that allows for faster G-protein dissociation compared to the standard canonical orientation. The study further details the structural…