{
  "id": 14391147,
  "title": "Clustering of the Adhesion-GPCR Latrophilin-3 Drives Excitatory Synapse Assembly",
  "url": "https://urgent.news/2026/10/13/clustering-of-the-adhesion-gpcr-latrophilin-3-drives-excitatory",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-13T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.12.757884v1?rss=1"
  },
  "original_language": "en",
  "account": "Synapse formation is crucial for proper brain function. Adhesion-GPCRs, which possess adhesion, signaling, and scaffold recruitment capabilities, play a role in regulating this process. However, the exact mechanisms behind their actions are still not fully understood.\n\nIn a recent study, researchers have discovered that the adhesion-GPCR Latrophilin-3 forms tiny clusters at the nanoscale, which is a critical mechanism for controlling excitatory synapse assembly. These clusters tend to be larger and more concentrated at regions where excitatory synapses are present.\n\nTo investigate the importance of Latrophilin-3 clustering, scientists created a version of the protein that could be controlled using light. When this optogenetically controlled Latrophilin-3 was exposed to light, it gathered into clusters, leading to the formation of new excitatory synapses. This process required two components: Latrophilin-3's ability to interact with signaling molecules outside the cell (G-protein signaling) and its ability to recruit specific proteins to the surface of cells (postsynaptic scaffold recruitment).\n\nInterestingly, even when the light-controlled Latrophilin-3 did not have the parts that normally allow it to bind to specific molecules (ligand-binding domains), it could still trigger synapse formation. This implies that other proteins in the cell, which are known as Ligands, are primarily responsible for promoting synapse assembly by inducing the clustering of Latrophilin-3.\n\nThe study suggests a new pattern of how extracellular signals, through their ability to bring proteins into close proximity, can activate adhesion-GPCRs. In the case of Latrophilin-3, these activated receptors then work together with proteins on the surface of cells to help form new synapses.",
  "summary": "Precise control of synapse formation is essential for brain function. Adhesion-GPCRs combine adhesion, signaling, and scaffold recruitment to regulate synapse formation, yet their mechanisms of action remain unclear. Here, we identify nanoscale clustering of the adhesion-GPCR Latrophilin-3 as a key mechanism regulating excitatory synapse assembly. We find that endogenous Latrophilin-3 forms…",
  "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."
}