{
  "annotation_id": "9eb8f629-6b42-43f5-b983-384092733c39",
  "date_created": "2026-03-02T18:00:53.516000Z",
  "date_modified": "2026-03-02T18:00:53.516000Z",
  "file_hash": "5771ab1d983f02a227edfa4b466b78d5eeb8443c6b4459a136cf0a3ebaff6a15",
  "private": false,
  "record": {
    "abstract": "A molecular model is proposed of a bilayer consisting of fully saturated DPPC\nand mono unsaturated DOPC. The model not only encompasses the constant density\nwithin the hydrophobic core of the bilayer, but also the tendency of chain\nsegments to align. It is solved within self-consistent field theory. A model\nbilayer of DPPC undergoes a main chain transition to a gel phase, while a\nbilayer of DOPC does not do so above zero degrees centigrade because of the\ndouble bond which disrupts order. We examine structural and thermodynamic\nproperties of these membranes and find our results in reasonable accord with\nexperiment. In particular, order-parameter profiles are in good agreement with\nNMR experiments. A phase diagram is obtained for mixtures of these lipids in a\nmembrane at zero tension. The system undergoes phase separation below the\nmain-chain transition temperature of the saturated lipid. Extensions to the\nternary DPPC, DOPC, and cholesterol system are outlined.",
    "arxiv_id": "physics/0408085",
    "authors": [
      "R. Elliott",
      "K. Katsov",
      "M. Schick",
      "I. Szleifer"
    ],
    "categories": [
      "physics.bio-ph"
    ],
    "doi": "10.1063/1.1836753",
    "title": "Phase Separation of Saturated and Mono-unsaturated Lipids as determined   from a Microscopic Model",
    "url": "https://arxiv.org/abs/physics/0408085"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "09efd7ce-dc64-4425-aee9-053b737f2e23",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}