2exw: Difference between revisions

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{{Seed}}
[[Image:2exw.png|left|200px]]


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==Crystal structure of a EcClC-Fab complex in the absence of bound ions==
The line below this paragraph, containing "STRUCTURE_2exw", creates the "Structure Box" on the page.
<StructureSection load='2exw' size='340' side='right'caption='[[2exw]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2exw]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EXW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2EXW FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.2&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2exw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2exw OCA], [https://pdbe.org/2exw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2exw RCSB], [https://www.ebi.ac.uk/pdbsum/2exw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2exw ProSAT]</span></td></tr>
{{STRUCTURE_2exw|  PDB=2exw  |  SCENE=  }}
</table>
== Function ==
[https://www.uniprot.org/uniprot/CLCA_ECOLI CLCA_ECOLI] Proton-coupled chloride transporter. Functions as antiport system and exchanges two chloride ions for 1 proton. Probably acts as an electrical shunt for an outwardly-directed proton pump that is linked to amino acid decarboxylation, as part of the extreme acid resistance (XAR) response.<ref>PMID:12384697</ref> <ref>PMID:14985752</ref> <ref>PMID:16341087</ref> <ref>PMID:16905147</ref> <ref>PMID:18678918</ref>
== 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/ex/2exw_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/main_output.php?pdb_ID=2exw ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The ClC channels are members of a large protein family of chloride (Cl-) channels and secondary active Cl- transporters. Despite their diverse functions, the transmembrane architecture within the family is conserved. Here we present a crystallographic study on the ion-binding properties of the ClC selectivity filter in the close homolog from Escherichia coli (EcClC). The ClC selectivity filter contains three ion-binding sites that bridge the extra- and intracellular solutions. The sites bind Cl- ions with mM affinity. Despite their close proximity within the filter, the three sites can be occupied simultaneously. The ion-binding properties are found conserved from the bacterial transporter EcClC to the human Cl- channel ClC-1, suggesting a close functional link between ion permeation in the channels and active transport in the transporters. In resemblance to K+ channels, ions permeate the ClC channel in a single file, with mutual repulsion between the ions fostering rapid conduction.


===Crystal structure of a EcClC-Fab complex in the absence of bound ions===
Ion-binding properties of the ClC chloride selectivity filter.,Lobet S, Dutzler R EMBO J. 2006 Jan 11;25(1):24-33. Epub 2005 Dec 8. PMID:16341087<ref>PMID:16341087</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2exw" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_16341087}}, adds the Publication Abstract to the page
*[[Monoclonal Antibodies 3D structures|Monoclonal Antibodies 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 16341087 is the PubMed ID number.
== References ==
-->
<references/>
{{ABSTRACT_PUBMED_16341087}}
__TOC__
 
</StructureSection>
==About this Structure==
2EXW is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2EXW OCA].
 
==Reference==
Ion-binding properties of the ClC chloride selectivity filter., Lobet S, Dutzler R, EMBO J. 2006 Jan 11;25(1):24-33. Epub 2005 Dec 8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16341087 16341087]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
[[Category: Single protein]]
[[Category: Dutzler R]]
[[Category: Dutzler, R.]]
[[Category: Lobet S]]
[[Category: Lobet, S.]]
[[Category: Clc family of cl- channels and transporter]]
[[Category: H+/cl- antiporter]]
[[Category: Membrane protein/fab complex]]
 
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Retrieved from "https://proteopedia.org/2exw"