1237-DRP1&MID49 Diffusion Dynamics in Mitochondrial Fission

Paper Talk · Jul 6, 2026 · 20m

This study discovered that DRP1 oligomers do not simply attach to static points on mitochondria but instead perform a "mito-scanning" motion. These protein complexes move via free diffusion in spiral-like trajectories across the organelle's surface to identify potential division sites. The study utilizes live-cell super-resolution microscopy to demonstrate that these stable assemblies often stall at pre-constricted locations before initiating mitochondrial fission. Findings indicate that this scanning behavior is essential for proper organelle morphology, with specific receptor proteins like…