View source for 1yxw


==A common binding site for disialyllactose and a tri-peptide in the C-fragment of tetanus neurotoxin==
<StructureSection load='1yxw' size='340' side='right'caption='[[1yxw]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1yxw]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_tetani Clostridium tetani]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YXW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YXW FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GLU:GLUTAMIC+ACID'>GLU</scene>, <scene name='pdbligand=TRP:TRYPTOPHAN'>TRP</scene>, <scene name='pdbligand=TYR:TYROSINE'>TYR</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=1yxw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yxw OCA], [https://pdbe.org/1yxw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yxw RCSB], [https://www.ebi.ac.uk/pdbsum/1yxw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yxw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TETX_CLOTE TETX_CLOTE] Tetanus toxin acts by inhibiting neurotransmitter release. It binds to peripheral neuronal synapses, is internalized and moves by retrograde transport up the axon into the spinal cord where it can move between postsynaptic and presynaptic neurons. It inhibits neurotransmitter release by acting as a zinc endopeptidase that catalyzes the hydrolysis of the '76-Gln-|-Phe-77' bond of synaptobrevin-2.
== 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/yx/1yxw_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=1yxw ConSurf].
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== Publication Abstract from PubMed ==
Clostridial neurotoxins are comprised of botulinum (BoNT) and tetanus (TeNT), which share significant structural and functional similarity. Crystal structures of the binding domain of TeNT complexed with disialyllactose (DiSia) and a tri-peptide Tyr-Glu-Trp (YEW) have been determined to 2.3 and 2.2 A, respectively. Both DiSia and YEW bind in a shallow cleft region on the surface of the molecule in the beta-trefoil domain, interacting with a set of common residues, Asp1147, Asp1214, Asn1216, and Arg1226. DiSia and YEW binding at the same site in tetanus toxin provides a putative site that could be occupied either by a ganglioside moiety or a peptide. Soaking experiments with a mixture of YEW and DiSia show that YEW competes with DiSia, suggesting that YEW can be used to block ganglioside binding. A comparison with the TeNT binding domain in complex with small molecules, BoNT/A and /B, provides insight into the different modes of ganglioside binding.

Common binding site for disialyllactose and tri-peptide in C-fragment of tetanus neurotoxin.,Jayaraman S, Eswaramoorthy S, Kumaran D, Swaminathan S Proteins. 2005 Nov 1;61(2):288-95. PMID:16104015<ref>PMID:16104015</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1yxw" style="background-color:#fffaf0;"></div>

==See Also==
*[[Tetanus toxin|Tetanus toxin]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Clostridium tetani]]
[[Category: Large Structures]]
[[Category: Eswaramoorthy S]]
[[Category: Jayaraman S]]
[[Category: Kumaran D]]
[[Category: Swaminathan S]]