|
|
| Line 1: |
Line 1: |
| - | ==Crystal Structure of cyanobacterial Photosystem II (part 1 of 2). This file contains first monomer of PSII dimer==
| + | #REDIRECT [[4v62]] This PDB entry is obsolete and replaced by 4v62 |
| - | <StructureSection load='3bz1' size='340' side='right' caption='[[3bz1]], [[Resolution|resolution]] 2.90Å' scene=''>
| + | |
| - | == Structural highlights ==
| + | |
| - | <table><tr><td colspan='2'>[[3bz1]] is a 20 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermosynechococcus_elongatus Thermosynechococcus elongatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BZ1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BZ1 FirstGlance]. <br>
| + | |
| - | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BCR:BETA-CAROTENE'>BCR</scene>, <scene name='pdbligand=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=OEC:OXYGEN+EVOLVING+SYSTEM'>OEC</scene>, <scene name='pdbligand=PHO:PHEOPHYTIN+A'>PHO</scene>, <scene name='pdbligand=PL9:2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE'>PL9</scene>, <scene name='pdbligand=SQD:1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL'>SQD</scene><br>
| + | |
| - | <tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr>
| + | |
| - | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3bz2|3bz2]]</td></tr>
| + | |
| - | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3bz1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bz1 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3bz1 RCSB], [http://www.ebi.ac.uk/pdbsum/3bz1 PDBsum]</span></td></tr>
| + | |
| - | <table>
| + | |
| - | == Evolutionary Conservation ==
| + | |
| - | [[Image:Consurf_key_small.gif|200px|right]]
| + | |
| - | Check<jmol>
| + | |
| - | <jmolCheckbox>
| + | |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bz/3bz1_consurf.spt"</scriptWhenChecked>
| + | |
| - | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
| + | |
| - | <text>to colour the structure by Evolutionary Conservation</text>
| + | |
| - | </jmolCheckbox>
| + | |
| - | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
| + | |
| - | <div style="clear:both"></div>
| + | |
| - | <div style="background-color:#fffaf0;">
| + | |
| - | == Publication Abstract from PubMed ==
| + | |
| - | Photosystem II (PSII) is a large homodimeric protein-cofactor complex located in the photosynthetic thylakoid membrane that acts as light-driven water:plastoquinone oxidoreductase. The crystal structure of PSII from Thermosynechococcus elongatus at 2.9-A resolution allowed the unambiguous assignment of all 20 protein subunits and complete modeling of all 35 chlorophyll a molecules and 12 carotenoid molecules, 25 integral lipids and 1 chloride ion per monomer. The presence of a third plastoquinone Q(C) and a second plastoquinone-transfer channel, which were not observed before, suggests mechanisms for plastoquinol-plastoquinone exchange, and we calculated other possible water or dioxygen and proton channels. Putative oxygen positions obtained from a Xenon derivative indicate a role for lipids in oxygen diffusion to the cytoplasmic side of PSII. The chloride position suggests a role in proton-transfer reactions because it is bound through a putative water molecule to the Mn(4)Ca cluster at a distance of 6.5 A and is close to two possible proton channels.
| + | |
| - | | + | |
| - | Cyanobacterial photosystem II at 2.9-A resolution and the role of quinones, lipids, channels and chloride.,Guskov A, Kern J, Gabdulkhakov A, Broser M, Zouni A, Saenger W Nat Struct Mol Biol. 2009 Mar;16(3):334-42. Epub 2009 Feb 15. PMID:19219048<ref>PMID:19219048</ref>
| + | |
| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div>
| + | |
| - | | + | |
| - | ==See Also==
| + | |
| - | *[[Cytochrome c|Cytochrome c]]
| + | |
| - | *[[Photosystem II|Photosystem II]]
| + | |
| - | == References ==
| + | |
| - | <references/>
| + | |
| - | __TOC__
| + | |
| - | </StructureSection>
| + | |
| - | [[Category: Thermosynechococcus elongatus]]
| + | |
| - | [[Category: Broser, M.]]
| + | |
| - | [[Category: Gabdulkhakov, A.]]
| + | |
| - | [[Category: Guskov, A.]]
| + | |
| - | [[Category: Kern, J.]]
| + | |
| - | [[Category: Saenger, W.]]
| + | |
| - | [[Category: Zouni, A.]]
| + | |
| - | [[Category: Electron transport]]
| + | |
| - | [[Category: Electron transport photosystem]]
| + | |
| - | [[Category: Heme]]
| + | |
| - | [[Category: Herbicide resistance]]
| + | |
| - | [[Category: Iron]]
| + | |
| - | [[Category: Manganese]]
| + | |
| - | [[Category: Membrane complex]]
| + | |
| - | [[Category: Metal-binding]]
| + | |
| - | [[Category: Photosynthesis]]
| + | |
| - | [[Category: Photosystem ii]]
| + | |
| - | [[Category: Ps ii]]
| + | |
| - | [[Category: Ps2]]
| + | |
| - | [[Category: Reaction center]]
| + | |
| - | [[Category: Thylakoid]]
| + | |
| - | [[Category: Transmembrane alpha-helix]]
| + | |
