1e12
From Proteopedia
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| - | [[ | + | ==Halorhodopsin, a light-driven chloride pump== |
| + | <StructureSection load='1e12' size='340' side='right' caption='[[1e12]], [[Resolution|resolution]] 1.80Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[1e12]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Halobacterium_salinarum Halobacterium salinarum]. The March 2002 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Bacteriorhodopsin'' by David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2002_3 10.2210/rcsb_pdb/mom_2002_3]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E12 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1E12 FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MPG:1-MONOOLEOYL-RAC-GLYCEROL'>MPG</scene>, <scene name='pdbligand=PLM:PALMITIC+ACID'>PLM</scene>, <scene name='pdbligand=RET:RETINAL'>RET</scene><br> | ||
| + | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1brr|1brr]]</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=1e12 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e12 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1e12 RCSB], [http://www.ebi.ac.uk/pdbsum/1e12 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/e1/1e12_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 == | ||
| + | Halorhodopsin, an archaeal rhodopsin ubiquitous in Haloarchaea, uses light energy to pump chloride through biological membranes. Halorhodopsin crystals were grown in a cubic lipidic phase, which allowed the x-ray structure determination of this anion pump at 1.8 angstrom resolution. Halorhodopsin assembles to trimers around a central patch consisting of palmitic acid. Next to the protonated Schiff base between Lys(242) and the isomerizable retinal chromophore, a single chloride ion occupies the transport site. Energetic calculations on chloride binding reveal a combination of ion-ion and ion-dipole interactions for stabilizing the anion 18 angstroms below the membrane surface. Ion dragging across the protonated Schiff base explains why chloride and proton translocation modes are mechanistically equivalent in archaeal rhodopsins. | ||
| - | + | Structure of the light-driven chloride pump halorhodopsin at 1.8 A resolution.,Kolbe M, Besir H, Essen LO, Oesterhelt D Science. 2000 May 26;288(5470):1390-6. PMID:10827943<ref>PMID:10827943</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
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==See Also== | ==See Also== | ||
*[[Bacteriorhodopsin|Bacteriorhodopsin]] | *[[Bacteriorhodopsin|Bacteriorhodopsin]] | ||
*[[Rhodopsin|Rhodopsin]] | *[[Rhodopsin|Rhodopsin]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Bacteriorhodopsin]] | [[Category: Bacteriorhodopsin]] | ||
[[Category: Halobacterium salinarum]] | [[Category: Halobacterium salinarum]] | ||
Revision as of 10:40, 10 September 2014
Halorhodopsin, a light-driven chloride pump
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