2pps

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[[Image:2pps.gif|left|200px]]<br /><applet load="2pps" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:2pps.gif|left|200px]]
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caption="2pps, resolution 4.0&Aring;" />
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'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY'''<br />
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{{Structure
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|PDB= 2pps |SIZE=350|CAPTION= <scene name='initialview01'>2pps</scene>, resolution 4.0&Aring;
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|SITE= <scene name='pdbsite=ETS:The+Cofactors+Cla+2001+-+2006,+Pqn+2007+And+Fs4+2008+-+2+...'>ETS</scene>
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|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>
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|ACTIVITY=
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|GENE=
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}}
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'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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2PPS is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus] with <scene name='pdbligand=CLA:'>CLA</scene>, <scene name='pdbligand=PQN:'>PQN</scene> and <scene name='pdbligand=SF4:'>SF4</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. This structure supersedes the now removed PDB entry 1PPS. Known structural/functional Site: <scene name='pdbsite=ETS:The+Cofactors+Cla+2001+-+2006,+Pqn+2007+And+Fs4+2008+-+2+...'>ETS</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2PPS OCA].
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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==
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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://ispc.weizmann.ac.il//pmbin/getpm?pmid=8901876 8901876]
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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]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:31:57 2008''
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''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

Image:2pps.gif


PDB ID 2pps

Drag the structure with the mouse to rotate
, resolution 4.0Å
Sites:
Ligands: , and
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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