1bah: Difference between revisions

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[[Image:1bah.png|left|200px]]


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==A TWO DISULFIDE DERIVATIVE OF CHARYBDOTOXIN WITH DISULFIDE 13-33 REPLACED BY TWO ALPHA-AMINOBUTYRIC ACIDS, NMR, 30 STRUCTURES==
The line below this paragraph, containing "STRUCTURE_1bah", creates the "Structure Box" on the page.
<StructureSection load='1bah' size='340' side='right'caption='[[1bah]]' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)  
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1bah]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Leiurus_quinquestriatus Leiurus quinquestriatus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BAH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BAH FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</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='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ABA:ALPHA-AMINOBUTYRIC+ACID'>ABA</scene>, <scene name='pdbligand=PCA:PYROGLUTAMIC+ACID'>PCA</scene></td></tr>
{{STRUCTURE_1bah| PDB=1bah |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1bah FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bah OCA], [https://pdbe.org/1bah PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1bah RCSB], [https://www.ebi.ac.uk/pdbsum/1bah PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1bah ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/KAX11_LEIHE KAX11_LEIHE] This toxin inhibits numerous potassium channels: shaker (Ki=227 nM), Kv1.2/KCNA2 (nanomolar range), Kv1.3/KCNA3 (nanomolar range), Kv1.5/KCNA5 (Kd>100 nM), Kv1.6/KCNA6 (Ki=22 nM), KCa1.1/KCNMA1 (IC(50)=5.9 nM). It blocks channel activity by a simple bimolecular inhibition process. It also shows a weak interaction with nicotinic acetylcholine receptors (nAChR), suggesting it may weakly inhibit it (PubMed:31276191). It also exhibits pH-specific antimicrobial activities against bacteria (B.subtilis, E.coli and S.aureus) and the fungus C.albicans (PubMed:15118082).<ref>PMID:12527813</ref> <ref>PMID:15118082</ref> <ref>PMID:20007782</ref> <ref>PMID:2477548</ref> <ref>PMID:31276191</ref> <ref>PMID:7517498</ref> <ref>PMID:8204618</ref>
== 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/ba/1bah_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=1bah ConSurf].
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===A TWO DISULFIDE DERIVATIVE OF CHARYBDOTOXIN WITH DISULFIDE 13-33 REPLACED BY TWO ALPHA-AMINOBUTYRIC ACIDS, NMR, 30 STRUCTURES===
==See Also==
 
*[[Potassium channel toxin 3D structures|Potassium channel toxin 3D structures]]
 
== References ==
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(as it appears on PubMed at http://www.pubmed.gov), where 9092804 is the PubMed ID number.
</StructureSection>
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[[Category: Large Structures]]
{{ABSTRACT_PUBMED_9092804}}
 
==About this Structure==
1BAH is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Leiurus_quinquestriatus Leiurus quinquestriatus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BAH OCA].
 
==Reference==
NMR solution structure of a two-disulfide derivative of charybdotoxin: structural evidence for conservation of scorpion toxin alpha/beta motif and its hydrophobic side chain packing., Song J, Gilquin B, Jamin N, Drakopoulou E, Guenneugues M, Dauplais M, Vita C, Menez A, Biochemistry. 1997 Apr 1;36(13):3760-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9092804 9092804]
[[Category: Leiurus quinquestriatus]]
[[Category: Leiurus quinquestriatus]]
[[Category: Single protein]]
[[Category: Dauplais M]]
[[Category: Dauplais, M.]]
[[Category: Gilquin B]]
[[Category: Gilquin, B.]]
[[Category: Guenneugues M]]
[[Category: Guenneugues, M.]]
[[Category: Jamin N]]
[[Category: Jamin, N.]]
[[Category: Menez A]]
[[Category: Menez, A.]]
[[Category: Song J]]
[[Category: Song, J.]]
[[Category: Vita C]]
[[Category: Vita, C.]]
[[Category: Charybdotoxin]]
[[Category: Neurotoxin]]
[[Category: Potassium channel inhibitor]]
[[Category: Toxin]]
 
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