dorsal/arxiv
View SchemaRepresentative Pathways of Excitation Migration in Photosystem I
| Authors | Sanghyun Park, Melih K. Sener, Deyu Lu, Klaus Schulten |
|---|---|
| Categories | |
| ArXiv ID | physics/0207104 |
| URL | https://arxiv.org/abs/physics/0207104 |
| Journal | Journal of Chemical Physics 119, 1313 (2003) |
Abstract
Photosystem I is a protein-pigment complex that performs photosynthesis in plants, green algae, and cyanobacteria. It contains an aggregate of chlorophylls that absorbs light and delivers the resulting electronic excitation to the special pair of chlorophylls where the excitation energy is used for producing charge separation across the cell membrane. The seemingly random arrangement of chlorophylls in photosystem I poses the question which pathways excitation migration follows towards the special pair after absorption of light at any of its chlorophylls. We employ a master equation to describe the process of excitation migration in photosystem I, and find representative paths of excitation migration based on the mean first-passage time from each chlorophyll to the special pair. The resulting paths, beginning at each of the chlorophylls and ending at the special pair, provide a complete yet distilled picture of the excitation migration towards the special pair.
{
"annotation_id": "c6c4e781-a0c8-49bc-966e-608787e77e7b",
"date_created": "2026-03-02T18:00:39.779000Z",
"date_modified": "2026-03-02T18:00:39.779000Z",
"file_hash": "7f6cb3f755b47cd0a2be74f9cd3e7a0e04c9273b20e39a315b90dbb8d48d24e7",
"private": false,
"record": {
"abstract": "Photosystem I is a protein-pigment complex that performs photosynthesis in\nplants, green algae, and cyanobacteria. It contains an aggregate of\nchlorophylls that absorbs light and delivers the resulting electronic\nexcitation to the special pair of chlorophylls where the excitation energy is\nused for producing charge separation across the cell membrane. The seemingly\nrandom arrangement of chlorophylls in photosystem I poses the question which\npathways excitation migration follows towards the special pair after absorption\nof light at any of its chlorophylls. We employ a master equation to describe\nthe process of excitation migration in photosystem I, and find representative\npaths of excitation migration based on the mean first-passage time from each\nchlorophyll to the special pair. The resulting paths, beginning at each of the\nchlorophylls and ending at the special pair, provide a complete yet distilled\npicture of the excitation migration towards the special pair.",
"arxiv_id": "physics/0207104",
"authors": [
"Sanghyun Park",
"Melih K. Sener",
"Deyu Lu",
"Klaus Schulten"
],
"categories": [
"physics.bio-ph",
"q-bio"
],
"journal_ref": "Journal of Chemical Physics 119, 1313 (2003)",
"title": "Representative Pathways of Excitation Migration in Photosystem I",
"url": "https://arxiv.org/abs/physics/0207104"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "35093fe7-7aef-47ef-ab46-ad9fdc363740",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}