1237-DRP1 扫描线粒体表面诱导分裂的分子机制 episode artwork

EPISODE · Jul 6, 2026 · 21 MIN

1237-DRP1 扫描线粒体表面诱导分裂的分子机制

from 聊聊Sci

这项研究揭示了 DRP1 蛋白在线粒体分裂过程中的全新动态机制。研究人员利用超分辨率成像技术发现,DRP1 寡聚体并非直接招募至分裂位点,而是在线粒体表面进行一种被称为“线粒体扫描(mito-scanning)”的螺旋式自由扩散。这些稳定的蛋白复合物通过这种运动巡视线粒体,并在预先收缩的部位停滞,进而引发最终的细胞器分裂。分子动力学模拟进一步证实,这种扩散行为受到线粒体管状几何结构的影响。此外,研究还指出 MID49/51 等受体蛋白能调节 DRP1 的运动性,确保线粒体网络维持正常的形态与功能。该发现为理解线粒体动力学提供了重要的生物物理视角。References:Zollo C, Gomez Suarez D, Bararpour E P, et al. DRP1 and MID49 co-diffusion scans mitochondria for fission[J]. Nature Cell Biology, 2026: 1-15.前往小宇宙评论区与主播互动

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1237-DRP1 扫描线粒体表面诱导分裂的分子机制

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