1rwt
From Proteopedia
(New page: 200px<br /> <applet load="1rwt" size="450" color="white" frame="true" align="right" spinBox="true" caption="1rwt, resolution 2.72Å" /> '''Crystal Structure o...) |
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caption="1rwt, resolution 2.72Å" /> | caption="1rwt, resolution 2.72Å" /> | ||
'''Crystal Structure of Spinach Major Light-harvesting complex at 2.72 Angstrom Resolution'''<br /> | '''Crystal Structure of Spinach Major Light-harvesting complex at 2.72 Angstrom Resolution'''<br /> | ||
==Overview== | ==Overview== | ||
| - | The major light-harvesting complex of photosystem II (LHC-II) serves as | + | The major light-harvesting complex of photosystem II (LHC-II) serves as the principal solar energy collector in the photosynthesis of green plants and presumably also functions in photoprotection under high-light conditions. Here we report the first X-ray structure of LHC-II in icosahedral proteoliposome assembly at atomic detail. One asymmetric unit of a large R32 unit cell contains ten LHC-II monomers. The 14 chlorophylls (Chl) in each monomer can be unambiguously distinguished as eight Chla and six Chlb molecules. Assignment of the orientation of the transition dipole moment of each chlorophyll has been achieved. All Chlb are located around the interface between adjacent monomers, and together with Chla they are the basis for efficient light harvesting. Four carotenoid-binding sites per monomer have been observed. The xanthophyll-cycle carotenoid at the monomer-monomer interface may be involved in the non-radiative dissipation of excessive energy, one of the photoprotective strategies that have evolved in plants. |
==About this Structure== | ==About this Structure== | ||
| - | 1RWT is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea] with BNG, NA, LUT, XAT, NEX, LHG, DGD, CHL and CLA as [http://en.wikipedia.org/wiki/ligands ligands]. The following page contains interesting information on the relation of 1RWT with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb59_1.html Photosystem II]]. Full crystallographic information is available from [http:// | + | 1RWT is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea] with <scene name='pdbligand=BNG:'>BNG</scene>, <scene name='pdbligand=NA:'>NA</scene>, <scene name='pdbligand=LUT:'>LUT</scene>, <scene name='pdbligand=XAT:'>XAT</scene>, <scene name='pdbligand=NEX:'>NEX</scene>, <scene name='pdbligand=LHG:'>LHG</scene>, <scene name='pdbligand=DGD:'>DGD</scene>, <scene name='pdbligand=CHL:'>CHL</scene> and <scene name='pdbligand=CLA:'>CLA</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. The following page contains interesting information on the relation of 1RWT with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb59_1.html Photosystem II]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RWT OCA]. |
==Reference== | ==Reference== | ||
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[[Category: plant]] | [[Category: plant]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:55:21 2008'' |
Revision as of 12:55, 21 February 2008
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Crystal Structure of Spinach Major Light-harvesting complex at 2.72 Angstrom Resolution
Overview
The major light-harvesting complex of photosystem II (LHC-II) serves as the principal solar energy collector in the photosynthesis of green plants and presumably also functions in photoprotection under high-light conditions. Here we report the first X-ray structure of LHC-II in icosahedral proteoliposome assembly at atomic detail. One asymmetric unit of a large R32 unit cell contains ten LHC-II monomers. The 14 chlorophylls (Chl) in each monomer can be unambiguously distinguished as eight Chla and six Chlb molecules. Assignment of the orientation of the transition dipole moment of each chlorophyll has been achieved. All Chlb are located around the interface between adjacent monomers, and together with Chla they are the basis for efficient light harvesting. Four carotenoid-binding sites per monomer have been observed. The xanthophyll-cycle carotenoid at the monomer-monomer interface may be involved in the non-radiative dissipation of excessive energy, one of the photoprotective strategies that have evolved in plants.
About this Structure
1RWT is a Single protein structure of sequence from Spinacia oleracea with , , , , , , , and as ligands. The following page contains interesting information on the relation of 1RWT with [Photosystem II]. Full crystallographic information is available from OCA.
Reference
Crystal structure of spinach major light-harvesting complex at 2.72 A resolution., Liu Z, Yan H, Wang K, Kuang T, Zhang J, Gui L, An X, Chang W, Nature. 2004 Mar 18;428(6980):287-92. PMID:15029188
Page seeded by OCA on Thu Feb 21 14:55:21 2008
Categories: Photosystem II | Single protein | Spinacia oleracea | An, X. | Chang, W. | Gui, L. | Kuang, T. | Liu, Z. | Wang, K. | Yan, H. | Zhang, J. | BNG | CHL | CLA | DGD | LHG | LUT | NA | NEX | XAT | Light-harvesting complex | Membrane protein | Plant
