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M7444

Sigma-Aldrich

Maurotoxin

recombinant, expressed in E. coli, ≥95% (HPLC), lyophilized powder

Synonym(s):

MTX scorpion toxin

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About This Item

MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77

recombinant

expressed in E. coli

Quality Level

assay

≥95% (HPLC)

form

lyophilized powder

mol wt

3613

shipped in

wet ice

storage temp.

−20°C

Amino Acid Sequence

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

Biochem/physiol Actions

Maurotoxin is a 34 amino acid recombinant toxin, originally isolated from the venom of the scorpion Scorpio Maurus palmatus; a member of the α-KTx6.2 scorpion toxin family. It blocks voltage-gated potassium channels (KV1.1/KCNA1, KV1.2/KCNA2, and KV1.3/KCNA3) and inhibits apamin-sensitive small conductance calcium-activated channels (SK channels), particularly KCa3.1(IKca1, SK4).

Features and Benefits

This compound is featured on the Potassium Channels page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Reconstitution

Stock solution of 1 μm can be obtained by adding 0.277 mL of any conventional buffer per μg of protein.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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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N A Castle et al.
Molecular pharmacology, 63(2), 409-418 (2003-01-16)
Maurotoxin, a 34-amino acid toxin from Scorpio maurus scorpion venom, was examined for its ability to inhibit cloned human SK (SK1, SK2, and SK3), IK1, and Slo1 calcium-activated potassium (K(Ca)) channels. Maurotoxin was found to produce a potent inhibition of
Violeta Visan et al.
Molecular pharmacology, 66(5), 1103-1112 (2004-08-03)
Maurotoxin (MTX) is a potent blocker of human voltage-activated Kv1.2 and intermediate-conductance calcium-activated potassium channels, hIKCa1. Because its blocking affinity on both channels is similar, although the pore region of these channels show only few conserved amino acids, we aimed
Ricardo C Rodríguez de la Vega et al.
Toxicon : official journal of the International Society on Toxinology, 43(8), 865-875 (2004-06-23)
Much of our knowledge on K+-channels was elucidated using specific peptide ligands isolated from a number of venomous organisms. Recently, this field received a strong support and increased interest due to the solution of the three-dimensional structure of a couple

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