{
  "id": 18056241,
  "title": "Position-specific isotope signatures evolve during a reversible reaction",
  "url": "https://urgent.news/2026/10/26/position-specific-isotope-signatures-evolve-during-a-reversible",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-26T07:00:00.000Z",
  "source": {
    "name": "PNAS",
    "slug": "pnas",
    "url": "https://www.pnas.org/doi/abs/10.1073/pnas.2617402123?af=R"
  },
  "original_language": "en",
  "account": null,
  "summary": "Proceedings of the National Academy of Sciences, Volume 123, Issue 44, November 2026. SignificancePosition-specific carbon isotope analysis is an emerging high-resolution tool for inferring the metabolic pathways, environmental conditions, and chemical processes that produced a molecule. However, how fundamental isotope effects are ...",
  "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."
}