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I5904

Sigma-Aldrich

Iberiotoxin, recombinant from Mesobuthus tamulus

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

同義詞:

IbTX

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About This Item

經驗公式(希爾表示法):
C179H276N50O56S7
分子量::
4248.86
分類程式碼代碼:
12352200
PubChem物質ID:
NACRES:
NA.77

重組細胞

expressed in E. coli

品質等級

化驗

≥98% (HPLC)

儲存溫度

−20°C

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]

應用

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.

生化/生理作用

The single chain peptide iberiotoxin (IbTX) is a selective and reversible inhibitor of high-conductance calcium-activated potassium channels (PK,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.
Exhibits the same activity as the natural form of the toxin

特點和優勢

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.

準備報告

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

象形圖

Skull and crossbones

訊號詞

Danger

危險聲明

危險分類

Acute Tox. 1 Inhalation - Acute Tox. 2 Dermal - Acute Tox. 2 Oral

儲存類別代碼

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

水污染物質分類(WGK)

WGK 3

個人防護裝備

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


分析證明 (COA)

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Targeting TMEM176B Enhances Antitumor Immunity and Augments the Efficacy of Immune Checkpoint Blockers by Unleashing Inflammasome Activation
Segovia M, et al.
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The aim of this study was to investigate the effects and mechanisms of SGLT2 inhibitor empagliflozin on diabetic coronary function. A rat diabetic model was established by injection of streptozotocin. Rats in the treated group were administered empagliflozin by gavage
The TWIK2 potassium efflux channel in macrophages mediates NLRP3 inflammasome-induced inflammation
Di A, et al.
Immunity, 49(1), 56-65 (2018)
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Cell reports, 43(5), 114204-114204 (2024-05-15)
Amyotrophic lateral sclerosis can be caused by abnormal accumulation of TAR DNA-binding protein 43 (TDP-43) in the cytoplasm of neurons. Here, we use a C. elegans model for TDP-43-induced toxicity to identify the biological mechanisms that lead to disease-related phenotypes. By
Shuai Hu et al.
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Podocyte injury is a common hallmark in various glomerular diseases. The level of LRRC55 was increased in podocytes of patients with focal segmental glomerulosclerosis (FSGS), diabetic nephropathy (DN), and membranous nephropathy (MN). Upregulated LRRC55 and increased intracellular Ca2+ led to

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