2pps: Difference between revisions
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[[Image:2pps.gif|left|200px]] | [[Image:2pps.gif|left|200px]] | ||
'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY''' | {{Structure | ||
|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> | |||
|LIGAND= <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</scene> and <scene name='pdbligand=SF4:IRON/SULFUR CLUSTER'>SF4</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2PPS is a [ | 2PPS is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus]. This structure supersedes the now removed PDB entry 1PPS. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PPS OCA]. | ||
==Reference== | ==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:[http:// | 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:[http://www.ncbi.nlm.nih.gov/pubmed/8901876 8901876] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Synechococcus elongatus]] | [[Category: Synechococcus elongatus]] | ||
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[[Category: thermophilic cyanobacterium]] | [[Category: thermophilic cyanobacterium]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 18:15:57 2008'' | ||
Revision as of 16:16, 20 March 2008
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| 2pps, resolution 4.0Å | |||||||||||||
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| Sites: | ETS | ||||||||||||
| Ligands: | CLA, PQN and SF4 | ||||||||||||
| 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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