1ntx

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==SECONDARY STRUCTURE DETERMINATION FOR ALPHA-NEUROTOXIN FROM DENDROASPIS POLYLEPIS POLYLEPIS BASED ON SEQUENCE SPECIFIC PROTON NUCLEAR MAGNETIC RESONANCE ASSIGNMENTS==
==SECONDARY STRUCTURE DETERMINATION FOR ALPHA-NEUROTOXIN FROM DENDROASPIS POLYLEPIS POLYLEPIS BASED ON SEQUENCE SPECIFIC PROTON NUCLEAR MAGNETIC RESONANCE ASSIGNMENTS==
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<StructureSection load='1ntx' size='340' side='right'caption='[[1ntx]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
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<StructureSection load='1ntx' size='340' side='right'caption='[[1ntx]]' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[1ntx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Black_mamba Black mamba]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NTX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NTX FirstGlance]. <br>
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<table><tr><td colspan='2'>[[1ntx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Dendroaspis_polylepis_polylepis Dendroaspis polylepis polylepis]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NTX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NTX FirstGlance]. <br>
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</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=1ntx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ntx OCA], [https://pdbe.org/1ntx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ntx RCSB], [https://www.ebi.ac.uk/pdbsum/1ntx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ntx ProSAT]</span></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=1ntx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ntx OCA], [https://pdbe.org/1ntx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ntx RCSB], [https://www.ebi.ac.uk/pdbsum/1ntx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ntx ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[https://www.uniprot.org/uniprot/NXS1_DENPO NXS1_DENPO]] Produces peripheral paralysis by blocking neuromuscular transmission at the postsynaptic site. Binds to the muscular nicotinic acetylcholine receptor.
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[https://www.uniprot.org/uniprot/3S11_DENPO 3S11_DENPO] Binds to muscle nicotinic acetylcholine receptor (nAChR) and inhibit acetylcholine from binding to the receptor, thereby impairing neuromuscular transmission.[UniProtKB:P60775]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=1ntx ConSurf].
</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=1ntx ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
 
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== Publication Abstract from PubMed ==
 
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Sequence-specific assignments are presented for the polypeptide backbone protons and a majority of the amino-acid-side-chain protons of alpha-neurotoxin from Dendroaspis polylepis polylepis, and individual amide proton-exchange rates with the solvent are reported. The secondary structure and the hydrogen-bonding patterns in the regular secondary structure elements are deduced from nuclear Overhauser effects and the sequence locations of the slowly exchanging amide protons. The molecule includes a three-stranded antiparallel beta-sheet, and there are indications that two additional short chain segments are arranged in an antiparallel beta-sheet. These structural elements are similar, but not identical, to either the secondary structure reported for erabutoxin b in single crystals, or the solution structure of cytotoxin CTXIIb from Naja mossambica mossambica.
 
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Secondary structure determination for alpha-neurotoxin from Dendroaspis polylepis polylepis based on sequence-specific 1H-nuclear-magnetic-resonance assignments.,Labhardt AM, Hunziker-Kwik EH, Wuthrich K Eur J Biochem. 1988 Nov 1;177(2):295-305. PMID:2847926<ref>PMID:2847926</ref>
 
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
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</div>
 
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<div class="pdbe-citations 1ntx" style="background-color:#fffaf0;"></div>
 
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== References ==
 
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<references/>
 
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Black mamba]]
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[[Category: Dendroaspis polylepis polylepis]]
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Brown, L R]]
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[[Category: Brown LR]]
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[[Category: Wuthrich, K]]
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[[Category: Wuthrich K]]
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[[Category: Neurotoxin]]
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Revision as of 08:53, 10 April 2024

SECONDARY STRUCTURE DETERMINATION FOR ALPHA-NEUROTOXIN FROM DENDROASPIS POLYLEPIS POLYLEPIS BASED ON SEQUENCE SPECIFIC PROTON NUCLEAR MAGNETIC RESONANCE ASSIGNMENTS

PDB ID 1ntx

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