7bg4: Difference between revisions

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<StructureSection load='7bg4' size='340' side='right'caption='[[7bg4]], [[Resolution|resolution]] 4.20&Aring;' scene=''>
<StructureSection load='7bg4' size='340' side='right'caption='[[7bg4]], [[Resolution|resolution]] 4.20&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[7bg4]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BG4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BG4 FirstGlance]. <br>
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7BG4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7BG4 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=RHQ:RHODAMINE+6G'>RHQ</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 4.2&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[6r72|6r72]], [[6r81|6r81]]</div></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=RHQ:RHODAMINE+6G'>RHQ</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7bg4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7bg4 OCA], [https://pdbe.org/7bg4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7bg4 RCSB], [https://www.ebi.ac.uk/pdbsum/7bg4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7bg4 ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7bg4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7bg4 OCA], [https://pdbe.org/7bg4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7bg4 RCSB], [https://www.ebi.ac.uk/pdbsum/7bg4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7bg4 ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Multidrug ABC transporters translocate drugs across membranes by a mechanism for which the molecular features of drug release are so far unknown. Here, we resolved three ATP-Mg(2+)-bound outward-facing conformations of the Bacillus subtilis (homodimeric) BmrA by x-ray crystallography and single-particle cryo-electron microscopy (EM) in detergent solution, one of them with rhodamine 6G (R6G), a substrate exported by BmrA when overexpressed in B. subtilis. Two R6G molecules bind to the drug-binding cavity at the level of the outer leaflet, between transmembrane (TM) helices 1-2 of one monomer and TM5'-6' of the other. They induce a rearrangement of TM1-2, highlighting a local flexibility that we confirmed by hydrogen/deuterium exchange and molecular dynamics simulations. In the absence of R6G, simulations show a fast postrelease occlusion of the cavity driven by hydrophobicity, while when present, R6G can move within the cavity, maintaining it open.


Substrate-bound and substrate-free outward-facing structures of a multidrug ABC exporter.,Chaptal V, Zampieri V, Wiseman B, Orelle C, Martin J, Nguyen KA, Gobet A, Di Cesare M, Magnard S, Javed W, Eid J, Kilburg A, Peuchmaur M, Marcoux J, Monticelli L, Hogbom M, Schoehn G, Jault JM, Boumendjel A, Falson P Sci Adv. 2022 Jan 28;8(4):eabg9215. doi: 10.1126/sciadv.abg9215. Epub 2022 Jan, 26. PMID:35080979<ref>PMID:35080979</ref>
==See Also==
 
*[[ABC transporter 3D structures|ABC transporter 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7bg4" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Chaptal, V]]
[[Category: Chaptal V]]
[[Category: Falson, P]]
[[Category: Falson P]]
[[Category: Hogbom, M]]
[[Category: Hogbom M]]
[[Category: Magnard, S]]
[[Category: Magnard S]]
[[Category: Wiseman, B]]
[[Category: Wiseman B]]
[[Category: Zampieri, V]]
[[Category: Zampieri V]]
[[Category: Abc transporter]]
[[Category: Membrane protein]]
[[Category: Multidrug resistance]]
[[Category: Transport protein]]

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