1qzv
From Proteopedia
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[[Image:1qzv.gif|left|200px]] | [[Image:1qzv.gif|left|200px]] | ||
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'''Crystal structure of plant photosystem I''' | '''Crystal structure of plant photosystem I''' | ||
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==About this Structure== | ==About this Structure== | ||
| - | + | Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QZV OCA]. | |
==Reference== | ==Reference== | ||
Crystal structure of plant photosystem I., Ben-Shem A, Frolow F, Nelson N, Nature. 2003 Dec 11;426(6967):630-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14668855 14668855] | Crystal structure of plant photosystem I., Ben-Shem A, Frolow F, Nelson N, Nature. 2003 Dec 11;426(6967):630-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14668855 14668855] | ||
| - | [[Category: Pisum sativum]] | ||
| - | [[Category: Protein complex]] | ||
[[Category: Ben-Shem, A.]] | [[Category: Ben-Shem, A.]] | ||
[[Category: Frolow, F.]] | [[Category: Frolow, F.]] | ||
[[Category: Nelson, N.]] | [[Category: Nelson, N.]] | ||
| - | [[Category: | + | [[Category: Light-harvesting system]] |
| - | [[Category: | + | [[Category: Peripheral antenna]] |
| - | [[Category: | + | [[Category: Photosynthesis,plant photosynthetic reaction center]] |
| - | [[Category: | + | [[Category: Plant membrane protein complex]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:54:18 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 03:54, 3 May 2008
Crystal structure of plant photosystem I
Overview
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.
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 Sat May 3 06:54:18 2008
