1s0e: Difference between revisions

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-[[Image:1s0e.jpg|left|200px]]
-<!--
-The line below this paragraph, containing "STRUCTURE_1s0e", creates the "Structure Box" on the page.
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
-or leave the SCENE parameter empty for the default display.
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-{{STRUCTURE_1s0e|  PDB=1s0e  |  SCENE=  }}
-'''Crystal structure of botulinum neurotoxin type B at pH 6.0'''
+==Crystal structure of botulinum neurotoxin type B at pH 6.0==
+<StructureSection load='1s0e' size='340' side='right'caption='[[1s0e]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1s0e]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_botulinum Clostridium botulinum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S0E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1S0E 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]] 1.9&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=1s0e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s0e OCA], [https://pdbe.org/1s0e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1s0e RCSB], [https://www.ebi.ac.uk/pdbsum/1s0e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1s0e ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/BXB_CLOBO BXB_CLOBO] Botulinum 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 cleaves 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/s0/1s0e_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1s0e ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Clostridium botulinum neurotoxins are the most potent toxins to humans and cause paralysis by blocking neurotransmitter release at the presynaptic nerve terminals. The toxicity involves four steps, viz., binding to neuronal cells, internalization, translocation, and catalytic activity. While the catalytic activity is a zinc endopeptidase activity on the SNARE complex proteins, the translocation is believed to be a pH-dependent process allowing the translocation domain to change its conformation to penetrate the endosomal membrane. Here, we report the crystal structures of botulinum neurotoxin type B at various pHs and of an apo form of the neurotoxin, and discuss the role of metal ions and the effect of pH variation in the biological activity. Except for the perturbation of a few side chains, the conformation of the catalytic domain is unchanged in the zinc-depleted apotoxin, suggesting that zinc's role is catalytic. We have also identified two calcium ions in the molecule and present biochemical evidence to show that they play a role in the translocation of the light chain through the membrane.
-==Overview==
+Role of metals in the biological activity of Clostridium botulinum neurotoxins.,Eswaramoorthy S, Kumaran D, Keller J, Swaminathan S Biochemistry. 2004 Mar 2;43(8):2209-16. PMID:14979717<ref>PMID:14979717</ref>
-Clostridium botulinum neurotoxins are the most potent toxins to humans and cause paralysis by blocking neurotransmitter release at the presynaptic nerve terminals. The toxicity involves four steps, viz., binding to neuronal cells, internalization, translocation, and catalytic activity. While the catalytic activity is a zinc endopeptidase activity on the SNARE complex proteins, the translocation is believed to be a pH-dependent process allowing the translocation domain to change its conformation to penetrate the endosomal membrane. Here, we report the crystal structures of botulinum neurotoxin type B at various pHs and of an apo form of the neurotoxin, and discuss the role of metal ions and the effect of pH variation in the biological activity. Except for the perturbation of a few side chains, the conformation of the catalytic domain is unchanged in the zinc-depleted apotoxin, suggesting that zinc's role is catalytic. We have also identified two calcium ions in the molecule and present biochemical evidence to show that they play a role in the translocation of the light chain through the membrane.
-==About this Structure==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-S0E is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Clostridium_botulinum Clostridium botulinum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S0E OCA].
+</div>
+<div class="pdbe-citations 1s0e" style="background-color:#fffaf0;"></div>
-==Reference==
+==See Also==
-Role of metals in the biological activity of Clostridium botulinum neurotoxins., Eswaramoorthy S, Kumaran D, Keller J, Swaminathan S, Biochemistry. 2004 Mar 2;43(8):2209-16. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14979717 14979717]
+*[[Botulinum neurotoxin 3D structures|Botulinum neurotoxin 3D structures]]
-[[Category: Bontoxilysin]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
 [[Category: Clostridium botulinum]]
-[[Category: Single protein]]
+[[Category: Large Structures]]
-[[Category: Eswaramoorthy, S.]]
+[[Category: Eswaramoorthy S]]
-[[Category: Keller, J.]]
+[[Category: Keller J]]
-[[Category: Kumaran, D.]]
+[[Category: Kumaran D]]
-[[Category: Swaminathan, S.]]
+[[Category: Swaminathan S]]
-[[Category: Botulinum]]
-[[Category: Metal]]
-[[Category: Neurotoxin]]
-[[Category: Ph]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 08:08:27 2008''