2pps: Difference between revisions
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|PDB= 2pps |SIZE=350|CAPTION= <scene name='initialview01'>2pps</scene>, resolution 4.0Å | |PDB= 2pps |SIZE=350|CAPTION= <scene name='initialview01'>2pps</scene>, resolution 4.0Å | ||
|SITE= <scene name='pdbsite=ETS:The+Cofactors+Cla+2001+-+2006,+Pqn+2007+And+Fs4+2008+-+2+...'>ETS</scene> | |SITE= <scene name='pdbsite=ETS:The+Cofactors+Cla+2001+-+2006,+Pqn+2007+And+Fs4+2008+-+2+...'>ETS</scene> | ||
|LIGAND= <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</scene> | |LIGAND= <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=UNK:UNKNOWN'>UNK</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2pps FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2pps OCA], [http://www.ebi.ac.uk/pdbsum/2pps PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2pps RCSB]</span> | |||
}} | }} | ||
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[[Category: Schubert, W D.]] | [[Category: Schubert, W D.]] | ||
[[Category: Witt, H T.]] | [[Category: Witt, H T.]] | ||
[[Category: core-antenna light-harvesting system]] | [[Category: core-antenna light-harvesting system]] | ||
[[Category: helix-bundle membrane protein]] | [[Category: helix-bundle membrane protein]] | ||
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[[Category: thermophilic cyanobacterium]] | [[Category: thermophilic cyanobacterium]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:39:11 2008'' | ||
Revision as of 01:39, 31 March 2008
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| 2pps, resolution 4.0Å | |||||||||||||
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| Sites: | ETS | ||||||||||||
| Ligands: | CLA, PQN, SF4, UNK | ||||||||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY
Overview
The 4 A X-ray structure model of trimeric photosystem I of the cyanobacterium Synechococcus elongatus reveals 31 transmembrane, nine surface and three stromal alpha-helices per monomer, assigned to the 11 protein subunits: PsaA and PsaB are related by a pseudo two-fold axis normal to the membrane plane, along which the electron transfer pigments are arranged. 65 antenna chlorophyll a (Chl a) molecules separated by < or = 16 A form an oval, clustered net continuous with the electron transfer chain through the second and third Chl a pairs of the electron transfer system. This suggests a dual role for these Chl a both in excitation energy and electron transfer. The architecture of the protein core indicates quinone and iron-sulphur type reaction centres to have a common ancestor.
About this Structure
2PPS is a Protein complex structure of sequences from Synechococcus elongatus. This structure supersedes the now removed PDB entry 1PPS. Full crystallographic information is available from OCA.
Reference
Photosystem I at 4 A resolution represents the first structural model of a joint photosynthetic reaction centre and core antenna system., Krauss N, Schubert WD, Klukas O, Fromme P, Witt HT, Saenger W, Nat Struct Biol. 1996 Nov;3(11):965-73. PMID:8901876
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