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K1514

Sigma-Aldrich

Kurtoxin

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About This Item

Empirical Formula (Hill Notation):
C324H478N94O90S8
Molecular Weight:
7386.36
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.32

form

solid

Quality Level

shipped in

dry ice

storage temp.

−20°C

Amino Acid Sequence

Lys-Ile-Asp-Gly-Tyr-Pro-Val-Asp-Tyr-Trp-Asn-Cys-Lys-Arg-Ile-Cys-Trp-Tyr-Asn-Asn-Lys-Tyr-Cys-Asn-Asp-Leu-Cys-Lys-Gly-Leu-Lys-Ala-Asp-Ser-Gly-Tyr-Cys-Trp-Gly-Trp-Thr-Leu-Ser-Cys-Tyr-Cys-Gln-Gly-Leu-Pro-Asp-Asn-Ala-Arg-Ile-Lys-Arg-Ser-Gly-Arg-Cys-Arg-Ala

General description

Kurtoxin is hydrophobic in nature and shares sequence identity with α-scorpion and has cysteine-stabilized α-helix and β-sheet (CSαβ) motif. It interacts with N-type, and P-type calcium (Ca2+) channels as well.

Application

Kurtoxin has been used as a blocker of T-type and R-Type voltage-gated calcium channels (VGGCs) in hippocampal neurons.

Biochem/physiol Actions

Kurtoxin is isolated from the venom of the South African scorpion Parabuthus transvaalicus. It associates with voltage-gated sodium channels and delays their inactivation.
T-type Ca2+ channel blocker; Scorpion toxin

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Chul Won Lee et al.
Biochemical and biophysical research communications, 416(3-4), 277-282 (2011-11-19)
Kurtoxin, a 63-amino acid peptide stabilized by four disulfide bonds, is the first reported peptide inhibitor of T-type voltage-gated calcium channels. Although T-type calcium channels have been implicated in a number of disease states, including epilepsy, chronic pain, hypertension and
Chul Won Lee et al.
Biochemistry, 51(9), 1862-1873 (2012-02-15)
Kurtoxin is a 63-amino acid polypeptide isolated from the venom of the South African scorpion Parabuthus transvaalicus. It is the first and only peptide ligand known to interact with Cav3 (T-type) voltage-gated Ca(2+) channels with high affinity and to modify
Giulietta Pinato et al.
Journal of cellular physiology, 220(3), 727-747 (2009-05-15)
Blockage of GABA-A receptors in hippocampal neuronal cultures triggers synchronous bursts of spikes initiating neuronal plasticity, partly mediated by changes of gene expression. By using specific pharmacological blockers, we have investigated which sources of Ca2+ entry primarily control changes of
R S Chuang et al.
Nature neuroscience, 1(8), 668-674 (1999-04-10)
The biophysical properties of T-type voltage-gated calcium channels are well suited to pacemaking and to supporting calcium flux near the resting membrane potential in both excitable and non-excitable cells. We have identified a new scorpion toxin (kurtoxin) that binds to
Serguei S Sidach et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 22(6), 2023-2034 (2002-03-16)
Studies of Ca channels expressed in oocytes have identified kurtoxin as a promising tool for functional and structural studies of low-threshold T-type Ca channels. This peptide, isolated from the venomous scorpion Parabuthus transvaalicus, inhibits low-threshold alpha1G and alpha1H Ca channels

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