3b5w

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[[Image:3b5w.png|left|200px]]
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==Crystal Structure of Eschericia coli MsbA==
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<StructureSection load='3b5w' size='340' side='right' caption='[[3b5w]], [[Resolution|resolution]] 5.30&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3b5w]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B5W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3B5W FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3b5x|3b5x]], [[3b5y|3b5y]], [[3b5z|3b5z]], [[3b60|3b60]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">msbA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</td></tr>
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<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=3b5w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3b5w OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3b5w RCSB], [http://www.ebi.ac.uk/pdbsum/3b5w PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/b5/3b5w_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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ATP-binding cassette (ABC) transporters are integral membrane proteins that translocate a wide variety of substrates across cellular membranes and are conserved from bacteria to humans. Here we compare four x-ray structures of the bacterial ABC lipid flippase, MsbA, trapped in different conformations, two nucleotide-bound structures and two in the absence of nucleotide. Comparison of the nucleotide-free conformations of MsbA reveals a flexible hinge formed by extracellular loops 2 and 3. This hinge allows the nucleotide-binding domains to disassociate while the ATP-binding half sites remain facing each other. The binding of the nucleotide causes a packing rearrangement of the transmembrane helices and changes the accessibility of the transporter from cytoplasmic (inward) facing to extracellular (outward) facing. The inward and outward openings are mediated by two different sets of transmembrane helix interactions. Altogether, the conformational changes between these structures suggest that large ranges of motion may be required for substrate transport.
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{{STRUCTURE_3b5w| PDB=3b5w | SCENE= }}
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Flexibility in the ABC transporter MsbA: Alternating access with a twist.,Ward A, Reyes CL, Yu J, Roth CB, Chang G Proc Natl Acad Sci U S A. 2007 Nov 27;104(48):19005-10. Epub 2007 Nov 16. PMID:18024585<ref>PMID:18024585</ref>
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===Crystal Structure of Eschericia coli MsbA===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_18024585}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[3b5w]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3B5W OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:018024585</ref><references group="xtra"/>
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Chang, G.]]
[[Category: Chang, G.]]

Revision as of 04:53, 2 October 2014

Crystal Structure of Eschericia coli MsbA

3b5w, resolution 5.30Å

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