Iberiotoxin
(HB1053)- Data
- Support & Resources
Data
Product overview
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Name
Iberiotoxin
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Short description
Potent, reversible, selective KCa channel inhibitor
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Biological description
Potent, reversible and selective KCa channel inhibitor (approx IC50 = 250 pM). Found in venom of Buthus tamulus scorpion.
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Biological action
Inhibitor
- Citations
Properties
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Chemical name
H-DL-Pyr-DL-Phe-DL-xiThr-DL-Asp-DL-Val-DL-Asp-DL-Cys(1)-DL-Ser-DL-Val-DL-Ser-DL-Lys-DL-Glu-DL-Cys(1)-DL-Trp-DL-Ser-DL-Val-DL-Cys(2)-DL-Lys-DL-Asp-DL-Leu-DL-Phe-Gly-DL-Val-DL-Asp-DL-Arg-Gly-DL-Lys-DL-Cys(2)-DL-Met-Gly-DL-Lys-DL-Lys-DL-Cys(3)-DL-Arg-DL-Cys(3)-DL-Tyr-DL-Gln-OH
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Molecular Weight
4230
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Molecular Formula
C179H274N50O55S7
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CAS Number
129203-60-7
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PubChem identifier
16132435
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SMILES
CC(C)CC1C(=O)NC(C(=O)NCC(=O)NC(C(=O)NC(C(=O)NC(C(=O)NCC(=O)NC(C(=O)NC(CSSCC(C(=O)NC(C(=O)NC(C(=O)N1)CC(=O)O)CCCCN)NC(=O)C(C(C)C)NC(=O)C(CO)NC(=O)C(CC2=CNC3=CC=CC=C32)NC(=O)C4CSSCC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)N4)CCC(=O)O)CCCCN)CO)C(C)C)CO)NC(=O)C(CC(=O)O)NC(=O)C(C(C)C)NC(=O)C(CC(=O)O)NC(=O)C(C(C)O)NC(=O)C(CC5=CC=CC=C5)NC(=O)C6CCC(=O)N6)C(=O)NC(CCSC)C(=O)NCC(=O)NC(CCCCN)C(=O)NC(CCCCN)C(=O)NC7CSSCC(NC(=O)C(NC7=O)CCCNC(=N)N)C(=O)NC(CC8=CC=C(C=C8)O)C(=O)NC(CCC(=O)N)C(=O)O)CCCCN)CCCNC(=N)N)CC(=O)O)C(C)C)CC9=CC=CC=C9
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InChi
InChI=1S/C179H274N50O55S7/c1-87(2)65-111-155(261)208-112(66-93-33-15-13-16-34-93)146(252)195-77-133(239)225-139(88(3)4)172(278)213-117(71-136(244)245)158(264)199-100(44-31-62-190-178(186)187)144(250)193-75-131(237)198-102(40-22-27-58-181)148(254)219-124(1
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InChiKey
VDNVVLOBNHIMQA-UHFFFAOYSA-N
Storing and Using Your Product
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Storage instructions
-20°C (desiccate)
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Solubility overview
Soluble in water (0.7mg/ml)
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Important
This product is for RESEARCH USE ONLY and is not intended for therapeutic or diagnostic use. Not for human or veterinary use.
References for Iberiotoxin
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Purification and characterization of a unique, potent, peptidyl probe for the high conductance calcium-activated potassium channel from venom of the scorpion Buthus tamulus.
Galvez A et al (1990) J Biol Chem 265(19) : 11083-90.PubMedID: 1694175 -
A neuronal beta subunit (KCNMB4) makes the large conductance, voltage- and Ca2+-activated K+ channel resistant to charybdotoxin and iberiotoxin.
Meera P et al (2000) Proc Natl Acad Sci U S A 97(10) : 5562-7.PubMedID: 10792058 -
Mode of action of iberiotoxin, a potent blocker of the large conductance Ca(2+)-activated K+ channel.
Candia S et al (1992) Biophys J 63(2) : 583-90.PubMedID: 1384740
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