2bhw
From Proteopedia
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|PDB= 2bhw |SIZE=350|CAPTION= <scene name='initialview01'>2bhw</scene>, resolution 2.5Å | |PDB= 2bhw |SIZE=350|CAPTION= <scene name='initialview01'>2bhw</scene>, resolution 2.5Å | ||
|SITE= <scene name='pdbsite=AC1:Dgd+Binding+Site+For+Chain+C'>AC1</scene> | |SITE= <scene name='pdbsite=AC1:Dgd+Binding+Site+For+Chain+C'>AC1</scene> | ||
| - | |LIGAND= <scene name='pdbligand=LUX:(3R,3 | + | |LIGAND= <scene name='pdbligand=LUX:(3R,3'R,6'S,9R,9'R,13R,13'S)-4',5'-DIDEHYDRO-5',6',7',8',9,9',10,10',11,11',12,12',13,13',14,14',15,15'-OCTADECAHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL'>LUX</scene>, <scene name='pdbligand=NEX:(1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY-2,2,6-TRIMETHYL-7-OXABICYCLO[4.1.0]HEPT-1-YL]-3,7,12,16-TETRAMETHYLOCTADECA-1,3,5,7,9,11,13,15,17-NONAENYLIDENE}-1,5,5-TRIMETHYLCYCLOHEXANE-1,3-DIOL'>NEX</scene>, <scene name='pdbligand=XAT:(3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-DIEPOXY-5,6,5',6'-+TETRAHYDRO-BETA,BETA-CAROTENE-3,3'-DIOL'>XAT</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=CHL:CHLOROPHYLL+B'>CHL</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene> and <scene name='pdbligand=DGD:DIGALACTOSYL DIACYL GLYCEROL (DGDG)'>DGD</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
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[[Category: transmembrane]] | [[Category: transmembrane]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 14:45:06 2008'' |
Revision as of 12:45, 23 March 2008
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
PEA LIGHT-HARVESTING COMPLEX II AT 2.5 ANGSTROM RESOLUTION
Overview
The plant light-harvesting complex of photosystem II (LHC-II) collects and transmits solar energy for photosynthesis in chloroplast membranes and has essential roles in regulation of photosynthesis and in photoprotection. The 2.5 A structure of pea LHC-II determined by X-ray crystallography of stacked two-dimensional crystals shows how membranes interact to form chloroplast grana, and reveals the mutual arrangement of 42 chlorophylls a and b, 12 carotenoids and six lipids in the LHC-II trimer. Spectral assignment of individual chlorophylls indicates the flow of energy in the complex and the mechanism of photoprotection in two close chlorophyll a-lutein pairs. We propose a simple mechanism for the xanthophyll-related, slow component of nonphotochemical quenching in LHC-II, by which excess energy is transferred to a zeaxanthin replacing violaxanthin in its binding site, and dissipated as heat. Our structure shows the complex in a quenched state, which may be relevant for the rapid, pH-induced component of nonphotochemical quenching.
About this Structure
2BHW is a Single protein structure of sequence from Pisum sativum. Full crystallographic information is available from OCA.
Reference
Mechanisms of photoprotection and nonphotochemical quenching in pea light-harvesting complex at 2.5 A resolution., Standfuss J, Terwisscha van Scheltinga AC, Lamborghini M, Kuhlbrandt W, EMBO J. 2005 Mar 9;24(5):919-28. Epub 2005 Feb 17. PMID:15719016
Page seeded by OCA on Sun Mar 23 14:45:06 2008
Categories: Pisum sativum | Single protein | Kuehlbrandt, W. | Lamborghini, M. | Scheltinga, A C.Terwisscha Van. | Standfuss, J. | CHL | CLA | DGD | LHG | LUX | NEX | XAT | Chlorophyll | Chloroplast | Chromophore | Lhc-ii | Light-harvesting | Membrane | Membrane protein | Phosphorylation | Photosynthesis | Photosystem i | Photosystem ii | Plastid | Thylakoid | Transit peptide | Transmembrane
