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[[Image:1qdr.gif|left|200px]]<br /><applet load="1qdr" size="350" color="white" frame="true" align="right" spinBox="true"
caption="1qdr, resolution 2.10&Aring;" />
'''2.1 A RESOLUTION STRUCTURE OF ESCHERICHIA COLI LYTIC TRANSGLYCOSYLASE SLT35'''<br />


==Overview==
==2.1 A RESOLUTION STRUCTURE OF ESCHERICHIA COLI LYTIC TRANSGLYCOSYLASE SLT35==
The Escherichia coli lytic transglycosylase Slt35 contains a single metal ion-binding site that resembles EF-hand calcium-binding sites. The Slt35 EF-hand is only the second observation of such a domain in a prokaryotic protein. Two crystal structures at 2.1 A resolution show that both Ca2+ ions and Na+ ions can bind to the EF-hand domain, but in subtly different configurations. Heat-induced unfolding studies demonstrate that Ca2+ ions are preferentially bound, and that only Ca2+ ions significantly increase the melting temperature of Slt35. This shows that the EF-hand calcium-binding domain is important for the stability of Slt35.
<StructureSection load='1qdr' size='340' side='right'caption='[[1qdr]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
 
== Structural highlights ==
==About this Structure==
<table><tr><td colspan='2'>[[1qdr]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QDR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QDR FirstGlance]. <br>
1QDR is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=NA:'>NA</scene>, <scene name='pdbligand=BCN:'>BCN</scene> and <scene name='pdbligand=EDO:'>EDO</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QDR OCA].  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
 
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BCN:BICINE'>BCN</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
==Reference==
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1qdr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qdr OCA], [https://pdbe.org/1qdr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qdr RCSB], [https://www.ebi.ac.uk/pdbsum/1qdr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qdr ProSAT]</span></td></tr>
Binding of calcium in the EF-hand of Escherichia coli lytic transglycosylase Slt35 is important for stability., van Asselt EJ, Dijkstra BW, FEBS Lett. 1999 Sep 24;458(3):429-35. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10570954 10570954]
</table>
== Function ==
[https://www.uniprot.org/uniprot/MLTB_ECOLI MLTB_ECOLI] Murein-degrading enzyme. Catalyzes the cleavage of the glycosidic bonds between N-acetylmuramic acid and N-acetylglucosamine residues in peptidoglycan. May play a role in recycling of muropeptides during cell elongation and/or cell division.
== 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/qd/1qdr_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=1qdr ConSurf].
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Asselt, E J.van.]]
[[Category: Dijkstra AJ]]
[[Category: Dijkstra, A J.]]
[[Category: Van Asselt EJ]]
[[Category: BCN]]
[[Category: EDO]]
[[Category: NA]]
[[Category: alpha-helical protein with an five-stranded antiparallel beta-sheet]]
[[Category: glycosyl transferase]]
 
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