{
  "id": 18131007,
  "title": "The Molecular Interplay of Tau and Motor Proteins on Microtubules",
  "url": "https://urgent.news/2026/11/04/the-molecular-interplay-of-tau-and-motor-proteins-on-microtubules",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-04T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.11.02.763819v1?rss=1"
  },
  "original_language": "en",
  "account": "Tau, a microtubule-associated protein, plays a crucial role in neuronal cytoskeletal organization and intracellular transport. However, the precise way in which tau regulates motor proteins remains unclear. To unravel this, researchers employed single-molecule imaging, cryo-electron microscopy, and molecular dynamics simulations to explore the molecular mechanisms involved in tau-mediated inhibition of kinesin-1 and cytoplasmic dynein motility.\n\nThe study revealed that tau suppresses microtubule (MT) landing and induces frequent pausing and premature detachment when motors encounter tau-enriched patches. Interestingly, tau affects each motor protein using distinct mechanisms. Kinesin-1 and tau compete for the same surface on tubulin, preventing them from simultaneously binding to the same MT site. In contrast, while dynein and tau can co-occupy the same tubulin, tau hinders the transition of dynein into its high-affinity MT-binding state.\n\nThrough these findings, tau functions as either a physical or a conformational roadblock, exerting concentration-dependent structural constraints on kinesin and dynein transport. This research establishes a structural framework for understanding tau-mediated regulation of axonal transport.",
  "summary": "Tau is a microtubule (MT)-associated protein essential for neuronal cytoskeletal organization and intracellular transport, yet how tau physically regulates motor proteins remains elusive. Here, we integrate single-molecule imaging, cryo-electron microscopy, and molecular dynamics (MD) simulations to investigate the molecular mechanisms underlying tau-mediated inhibition of kinesin-1 and…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}