| Bioactivity | Heteropodatoxin-2 (TFA), a peptides of 30-amino acid, is a heteropodatoxin. Heteropodatoxin-2 blocks Kv4.2 current expressed in Xenopus laevis oocytes in a voltage-dependent manner, with less block at more positive potentials[1]. | ||||||
| Name | Heteropodatoxin-2 TFA | ||||||
| Sequence | Asp-Asp-Cys-Gly-Lys-Leu-Phe-Ser-Gly-Cys-Asp-Thr-Asn-Ala-Asp-Cys-Cys-Glu-Gly-Tyr-Val-Cys-Arg-Leu-Trp-Cys-Lys-Leu-Asp-Trp-NH2 (Disulfide bridge:Cys3-Cys17;Cys10-Cys22;Cys16-Cys26) | ||||||
| Shortening | DDCGKLFSGCDTNADCCEGYVCRLWCKLDW-NH2 (Disulfide bridge:Cys3-Cys17;Cys10-Cys22;Cys16-Cys26) | ||||||
| Formula | C144H207N39O46S6.xC2HF3O2 | ||||||
| Molar Mass | 3412.81 (free base) | ||||||
| Appearance | 固体 | ||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||
| Storage | Sealed storage, away from moisture and light
*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light) |
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| Reference | [1]. M C Sanguinetti, et al. Heteropodatoxins: peptides isolated from spider venom that block Kv4.2 potassium channels. Mol Pharmacol. 1997 Mar;51(3):491-8. |