ProTx-I

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ProTx-I 

ProTx-I,一种 Thrixopelma pruriens 来源的毒素,是一种强效的选择性 CaV3.1 通道阻滞剂,对 hCaV3.1hCaV3.2IC50 值分别为 0.2 μM 和 31.8 μM。ProTx-I 还是电压门控 Na+ 通道的有效阻断剂,可抑制 KV 2.1 通道。

ProTx-I

ProTx-I Chemical Structure

CAS No. : 484598-35-8

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生物活性

ProTx-I, a venom toxin of the tarantula Thrixopelma pruriens, is a potent, selective CaV3.1 channel blocker with IC50 values of 0.2 μM and 31.8 μM for hCaV3.1 and hCaV3.2 respectively. ProTx-I is also a potent blocker for voltage-gated Na+ channels and inhibits KV 2.1 channels[1][2].

IC50 & Target

IC50: 0.2 μM (hCaV3.1) and 31.8 μM (hCaV3.2)[1]
Na+ channels[2]
KV 2.1 channels[2]

分子量

3988.00

Formula

C₁₇₁H₂₄₅N₅₃O₄₇S₆

CAS 号

484598-35-8

Sequence

Glu-Cys-Arg-Tyr-Trp-Leu-Gly-Gly-Cys-Ser-Ala-Gly-Gln-Thr-Cys-Cys-Lys-His-Leu-Val-Cys-Ser-Arg-Arg-His-Gly-Trp-Cys-Val-Trp-Asp-Gly-Thr-Phe-Ser (Disulfide bridge:Cys2-Cys16;Cys9-Cys21;Cys15-Cys28)

Sequence Shortening

ECRYWLGGCSAGQTCCKHLVCSRRHGWCVWDGTFS (Disulfide bridge:Cys2-Cys16;Cys9-Cys21;Cys15-Cys28)

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

参考文献
  • [1]. Tsuyako Ohkubo, et al. Tarantula toxin ProTx-I differentiates between human T-type voltage-gated Ca2+ Channels Cav3.1 and Cav3.2. J Pharmacol Sci. 2010;112(4):452-8.

    [2]. Richard E Middleton, et al. Two tarantula peptides inhibit activation of multiple sodium channels. Biochemistry. 2002 Dec 17;41(50):14734-47.

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