1. Membrane Transporter/Ion Channel
  2. Chloride Channel
  3. Chlorotoxin

Chlorotoxin 

目录号: HY-P0173A 纯度: >98.0%
产品使用指南

Chlorotoxin是从雷蛇属以色列蝎子的毒液中提取的由36个氨基酸组成的肽段,具有抗癌活性。Chlorotoxin是氯离子通道 (chloride channel) 阻断剂。

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Custom Peptide Synthesis

Chlorotoxin Chemical Structure

Chlorotoxin Chemical Structure

CAS No. : 163515-35-3

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100 μg ¥2100 Ask For Quote & Lead Time
500 μg ¥5900 Ask For Quote & Lead Time
1 mg ¥8800 Ask For Quote & Lead Time

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Chlorotoxin 的其他形式现货产品:

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Other Forms of Chlorotoxin:

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Description

Chlorotoxin is a 36 amino-acid peptide from the venom of the Israeli scorpion Leiurus quinquestriatus with anticancer activity. Chlorotoxin is a chloride channel blocker.

IC50 & Target

Target: Chloride Channel[1]

In Vitro

Chlorotoxin (Chlorotoxin) preferentially binds to tumor cells and has been harnessed to develop an imaging agent to help visualize tumors during surgical resection. In addition, chlorotoxin has potential as a vehicle to deliver anti-cancer drugs specifically to cancer cells. Chlorotoxin is shown to bind glioma cells, but is unable to bind normal rat astrocytes and Te671, a human rhabdomyosarcoma cell line. Chlorotoxin inhibits the migration of U251MG (glioma) cells, with an IC50 of 600 nM[2]. Chlorotoxin binds to glioma cells is specific and involves high affinity (Kd=4.2 nM) and low affinity (Kd=660 nM) binding sites[3].Small conductance chloride channels are shown to be potently blocked by Chlorotoxin. Chlorotoxin has been used as a general pharmacological tool to investigate the function of chloride channels[4].

In Vivo

Chlorotoxin shows insecticidal activity on insects and other invertebrates. After the administration of I-Chlorotoxin to tumor-bearing mice, the peptides accumulated within the tumor[2].Chlorotoxin selectively accumulates in the brain of tumor-bearing mice with calculated brain: muscle ratios of 36.4% of injected dose/g (ID/g), as compared to 12.4%ID/g in control animals[3].

Molecular Weight

3995.71

Formula

C₁₅₈H₂₄₉N₅₃O₄₇S₁₁

CAS No.

163515-35-3

Sequence

Met-Cys-Met-Pro-Cys-Phe-Thr-Thr-Asp-His-Gln-Met-Ala-Arg-Lys-Cys-Asp-Asp-Cys-Cys-Gly-Gly-Lys-Gly-Arg-Gly-Lys-Cys-Tyr-Gly-Pro-Gln-Cys-Leu-Cys-Arg-NH2 (Disulfide bridge: Cys2-Cys19,Cys5-Cys28,Cys16-Cys33,Cys20-Cys35)

Sequence Shortening

MCMPCFTTDHQMARKCDDCCGGKGRGKCYGPQCLCR-NH2 (Disulfide bridge: Cys2-Cys19,Cys5-Cys28,Cys16-Cys33,Cys20-Cys35)

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Pure form -80°C 2 years
  -20°C 1 year
In solvent -80°C 6 months
  -20°C 1 month
References
Animal Administration
[3]

Mouse: At 24, 48, 72, and 96 h after tumor-bearing and control SCID mice are injected with 125l-labeled Chlorotoxin, they are anesthetized and imaged. Both 125I- and 131l-labeled Chlorotoxin-injected animals and their control counterparts are killed at indicated time points for biodistribution studies[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References
  • 摩尔计算器

  • 稀释计算器

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass   Concentration   Volume   Molecular Weight *
= × ×

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

Keywords:

ChlorotoxinChloride ChannelCl− ChannelsInhibitorinhibitorinhibit

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