I5904

Iberiotoxin, recombinant from Mesobuthus tamulus

≥98% (HPLC), recombinant, expressed in E. coli

• Synonyme(s) : IbTX
• Formule empirique (notation de Hill) : C₁₇₉H₂₇₆N₅₀O₅₆S₇
• Poids moléculaire : 4248.86
• Code UNSPSC : 12352200
• ID de substance PubChem : 24896080
• Nomenclature NACRES : NA.77

Propriétés

• Produit recombinant: expressed in E. coli
• Niveau de qualité: 100
• Essai: ≥98% (HPLC)
• Température de stockage: −20°C

Description

Amino Acid Sequence

Glp-Phe-Thr-Asp-Val-Asp-Cys-Ser-Val-Ser-Lys-Glu-Cys-Trp-Ser-Val-Cys-Lys-Asp-Leu-Phe-Gly-Val-Asp-Arg-Gly-Lys-Cys-Met-Gly-Lys-Lys-Cys-Arg-Cys-Tyr-Gln [Disulfide Bridges: 7−28; 13−33; 17−35]

Application

Iberiotoxin, recombinant from Mesobuthus tamulus has been used as an inhibitor of large-conductance calcium-activated K⁺ channels to study its effect on the NLRP3 (nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3) inflammasome activation in bone marrow-derived macrophages (BMDMs). It has also been used to block Ca²⁺- activated K⁺ channels to determine interleukin(IL)-1β in BMDCs following inflammasome activation.

Actions biochimiques/physiologiques

Exhibits the same activity as the natural form of the toxin

The single chain peptide iberiotoxin (IbTX) is a selective and reversible inhibitor of high-conductance calcium-activated potassium channels (P_K,Ca). It occurs naturally in the venom of the scorpion Buthus tamulus. IbTX also modulates the binding of charybdotoxin (CbTX) to smooth muscle sarcolemmal membranes in a non-competitive manner. IbTX is similar in size to CbTX and shares considerable sequence homology with CbTX. However, IbTX differs in its overall charge in having one fewer basic and four more acidic residues than CbTX.

Caractéristiques et avantages

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.

Notes préparatoires

Soluble in aqueous buffers. Stock solutions of 1 μM can be aliquoted and stored at -20 °C for up to 3 months.

Informations sur la sécurité

• Pictogrammes: GHS06
• Mention d'avertissement: Danger
• Mentions de danger: H300 + H310 + H330
• Conseils de prudence: P260 - P262 - P264 - P280 - P302 + P352 + P310 - P304 + P340 + P310
• Classification des risques: Acute Tox. 1 Inhalation - Acute Tox. 2 Dermal - Acute Tox. 2 Oral
• Code de la classe de stockage: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Classe de danger pour l'eau (WGK): WGK 3
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges