Photosystem I

Function Photosystem I (PSI) is the second photosystem in the light harvesting systems of plants, algae and some bacteria. PSI is composed of 11 protein subunits, cytochrome b6, ferredoxin, plastocyanin, 4 phospholipids, 5 chlorophyls and carotenoid pigments, 3 coenzymes, Ca+2 and Mg+2 ions. See also Photosynthesis Photosystem I: structure. See page in Spanish Fotosistema I and Photosystem I: structure (Spanish).

spinqualitylabelsall models Photosystem I (PDB entry 1jb0) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

3D Structures of photosystem I3D Structures of photosystem I

Updated on 15-December-2021

3lw5, 2wsc, 2wse, 2wsf, 2o01, 1qzv, 4rku, 5l8r, 4y28, 6zxs – pPSI – pea
6zoo, 7dkz – pPSI - Cryo EM
4xk8 – pPSI + light harvesting complex
6zoo – pPSI + ferredoxin - Cryo EM
6yez – pPSI + ferredoxin + plastocyanin - Cryo EM
6rhz, 6sl5, 6yxr – gaPSI – green alga - Cryo EM
6qph – gaPSI
6igz – gaPSI + light harvesting complex - Cryo EM
6fos – raPSI – red alga
5zgh, 5zgb – raPSI – Cryo EM
5zji – PSI – maize
3pcq, 1jb0, 1c51, 2pps, 4fe1, 6pfy, 6pgk, 7bw2, 7m75, 7m76, 7m78 – TePSI – Thermosynechococcus elongatus
6hum, 6kig, 6l7o, 6lu1, 6tra, 6trc, 6trd – TePSI - Cryo EM
6kif – TePSI + flavodoxin - Cryo EM
6k33 – PSI – Thermosynechococcus vulcanus – Cryo EM
6ijo, 6ijj, 7bgi, 7blx, 7o01 – CrPSI – Chlamydomonas reinhardtii – Cryo EM
6jo6, 6jo5, 7d0j, 7dz7, 7dz8 – CrPSI + light harvesting complex – Cryo EM
6l35, 6mem – PSI + light harvesting complex – Physcomitrium patens - Cryo EM
6pnj, 7lx0 – PSI – Fischerella thermalis – Cryo EM
6qwj – PSI – Chroococcidiopsis – Cryo EM
6hqb, 4kt0, 4l6v, 5oy0 – SyPSI – Synechcystis
6nwa, 6uzv, 7o1v – SyPSI - Cryo EM
7s3d – SyPSI + ferredoxin - Cryo EM
1gxi – SyPSI subunit IV - NMR
1k0t - SyPSI subunit I – NMR
1pse, 1psf - SyPSI subunit V – NMR
6jeo, 6k61 – PSI – Anabena - Cryo EM
6vpv – PSI – Cyanobacterium aponinum - Cryo EM
7coy, 7dwq – PSI – Acariochloris marina - Cryo EM
6tcl – PSI – nostoc - Cryo EM
6kmw, 6kmx – PSI – Halomicronema hongdechloris - Cryo EM
6tcl, 6zzx, 7a4p – PSI – Chlorella ohadii - Cryo EM
6l4y, 6ly5 – PSI – Chaetoceros gracilis - Cryo EM