1qzv

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[[Image:1qzv.gif|left|200px]]
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{{Seed}}
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[[Image:1qzv.png|left|200px]]
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{{STRUCTURE_1qzv| PDB=1qzv | SCENE= }}
{{STRUCTURE_1qzv| PDB=1qzv | SCENE= }}
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'''Crystal structure of plant photosystem I'''
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===Crystal structure of plant photosystem I===
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==Overview==
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Oxygenic photosynthesis is the principal producer of both oxygen and organic matter on Earth. The conversion of sunlight into chemical energy is driven by two multisubunit membrane protein complexes named photosystem I and II. We determined the crystal structure of the complete photosystem I (PSI) from a higher plant (Pisum sativum var. alaska) to 4.4 A resolution. Its intricate structure shows 12 core subunits, 4 different light-harvesting membrane proteins (LHCI) assembled in a half-moon shape on one side of the core, 45 transmembrane helices, 167 chlorophylls, 3 Fe-S clusters and 2 phylloquinones. About 20 chlorophylls are positioned in strategic locations in the cleft between LHCI and the core. This structure provides a framework for exploration not only of energy and electron transfer but also of the evolutionary forces that shaped the photosynthetic apparatus of terrestrial plants after the divergence of chloroplasts from marine cyanobacteria one billion years ago.
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The line below this paragraph, {{ABSTRACT_PUBMED_14668855}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 14668855 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14668855}}
==About this Structure==
==About this Structure==
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[[Category: Photosynthesis,plant photosynthetic reaction center]]
[[Category: Photosynthesis,plant photosynthetic reaction center]]
[[Category: Plant membrane protein complex]]
[[Category: Plant membrane protein complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:54:18 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 09:30:55 2008''

Revision as of 06:31, 29 July 2008

Image:1qzv.png

Template:STRUCTURE 1qzv

Crystal structure of plant photosystem I

Template:ABSTRACT PUBMED 14668855

About this Structure

Full crystallographic information is available from OCA.

Reference

Crystal structure of plant photosystem I., Ben-Shem A, Frolow F, Nelson N, Nature. 2003 Dec 11;426(6967):630-5. PMID:14668855

Page seeded by OCA on Tue Jul 29 09:30:55 2008

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