1ktx: Difference between revisions
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==KALIOTOXIN (1-37) SHOWS STRUCTURAL DIFFERENCES WITH RELATED POTASSIUM CHANNEL BLOCKERS== | |||
<StructureSection load='1ktx' size='340' side='right'caption='[[1ktx]]' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1ktx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Androctonus_mauritanicus_mauritanicus Androctonus mauritanicus mauritanicus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KTX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KTX FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NH2:AMINO+GROUP'>NH2</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=1ktx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ktx OCA], [https://pdbe.org/1ktx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ktx RCSB], [https://www.ebi.ac.uk/pdbsum/1ktx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ktx ProSAT]</span></td></tr> | ||
[[1ktx]] is a 1 chain structure with sequence from [ | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/KAX31_ANDMA KAX31_ANDMA] Potent inhibitor of large conductance calcium-activated potassium channels (BK-Ca). Also binds to the dendrotoxin sensitive voltage-dependent potassium channel. It appears to block channel activity by a simple bimolecular inhibition process. Induces a transient period of fast flickering in the channel openings, followed by an almost complete blockade of the channel. Its binding affinity to rat brain synaptosomes is 5-fold higher than this of KTX-3. Binding of the toxin to the channel is associated with significant structural rearrangements in both molecules. | |||
== 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/kt/1ktx_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=1ktx ConSurf]. | |||
<div style="clear:both"></div> | |||
==See Also== | ==See Also== | ||
*[[Potassium channel toxin|Potassium channel toxin]] | *[[Potassium channel toxin 3D structures|Potassium channel toxin 3D structures]] | ||
__TOC__ | |||
</StructureSection> | |||
[[Category: Androctonus mauritanicus mauritanicus]] | [[Category: Androctonus mauritanicus mauritanicus]] | ||
[[Category: Fernandez | [[Category: Large Structures]] | ||
[[Category: Giralt | [[Category: Fernandez I]] | ||
[[Category: Martin-Eauclaire | [[Category: Giralt E]] | ||
[[Category: Pons | [[Category: Martin-Eauclaire M-F]] | ||
[[Category: | [[Category: Pons M]] | ||
[[Category: | [[Category: Rochat H]] | ||
[[Category: | [[Category: Romi R]] | ||
[[Category: | [[Category: Szendefi S]] | ||
[[Category: Van Rietschtoten J]] | |||
Latest revision as of 08:03, 3 April 2024
KALIOTOXIN (1-37) SHOWS STRUCTURAL DIFFERENCES WITH RELATED POTASSIUM CHANNEL BLOCKERS
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