Potassium channel toxin

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NMR studies of LqhαIT with a peptide derived from part of neurotoxin receptor site-3 (D4S3-S4) identified residues <scene name='1lqh/Nmr/1'>Lys8, Asn9, Cys12, Val13, Arg18, Trp38, Ala39 and Arg58</scene> of LqhαIT as participating in binding to that extra-cellular part of the sodium channel (3).
NMR studies of LqhαIT with a peptide derived from part of neurotoxin receptor site-3 (D4S3-S4) identified residues <scene name='1lqh/Nmr/1'>Lys8, Asn9, Cys12, Val13, Arg18, Trp38, Ala39 and Arg58</scene> of LqhαIT as participating in binding to that extra-cellular part of the sodium channel (3).
Both methods led to the identification of two regions on the surface of LqhαIT that participate in binding of the toxin to neurotoxin receptor site-3 on sodium channels.
Both methods led to the identification of two regions on the surface of LqhαIT that participate in binding of the toxin to neurotoxin receptor site-3 on sodium channels.
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==3D structures of potassium channel toxins==
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[[Potassium channel toxin 3D structures]]
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</StructureSection>
</StructureSection>
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**[[2kfe]] – meucin-24 – NMR<BR />
**[[2kfe]] – meucin-24 – NMR<BR />
**[[2ky3]], [[2lu9]] – tamapin - NMR<BR />
**[[2ky3]], [[2lu9]] – tamapin - NMR<BR />
-
**[[2me7]], [[2mel]], [[2men]], [[2meo]] – tamapin (mutant) – NMR<br />
+
**[[2me7]], [[2mel]], [[2men]], [[2meo]], [[6d3t]], [[6d8h]], [[6d8q]], [[6d8r]], [[6d8s]], [[6d8t]], [[6d8u]], [[6d8y]], [[6d93]], [[6d9o]], [[6d9p]] – tamapin (mutant) – NMR<br />
**[[1bah]], [[2crd]] – charybdotoxin - NMR<br />
**[[1bah]], [[2crd]] – charybdotoxin - NMR<br />
**[[1cmr]] – charybdotoxin (mutant) - NMR<br />
**[[1cmr]] – charybdotoxin (mutant) - NMR<br />
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**[[2a9h]] – charybdotoxin + voltage-gated potassium channel β2 - NMR<br />
**[[2a9h]] – charybdotoxin + voltage-gated potassium channel β2 - NMR<br />
**[[1lir]] – LQ2 – NMR<br />
**[[1lir]] – LQ2 – NMR<br />
-
**[[2sn3]] – toxin – Centruroides exilicauda<br />
+
**[[2sn3]] – toxin – ''Centruroides exilicauda''<br />
-
**[[1ptx]] – toxin – Androctonus australis<br />
+
**[[1ptx]] – toxin – ''Androctonus australis''<br />
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**[[6ggz]] – toxin – ''Androctonus mauritanicus'' - NMR<br />
**[[1lqh]], [[1lqi]] – toxin α – NMR<br />
**[[1lqh]], [[1lqi]] – toxin α – NMR<br />
**[[1snb]] – MmBMK M8 – Mesobuthus martensii<br />
**[[1snb]] – MmBMK M8 – Mesobuthus martensii<br />

Revision as of 08:48, 27 November 2019

Scorpion potassium channel toxin, 1lqh

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3D structures of potassium channel toxins

Updated on 27-November-2019

References

  1. Strong PN. Potassium channel toxins. Pharmacol Ther. 1990;46(1):137-62. PMID:2181489

Proteopedia Page Contributors and Editors (what is this?)

Michal Harel

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