ShK-Dap22

Cat. No. 3220

ShK-Dap22 Arg-Ser-Cys-Ile-Asp-Thr-Ile-Pro-Lys-Ser-Arg-Cys-Thr-Ala-Phe-Gln-Cys-Lys-His-Ser-Met-Dap-Tyr-Arg-Leu-Ser-Phe-Cys-Arg-Lys-Thr-Cys-Gly-Thr-Cys

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Biological Activity

Extremely potent KV1.3 channel blocker (Kd = 23 pM for mKV1.3 currents). Selective for KV1.3 over other mammalian potassium channels (IC50 values are 23, 1800, 10500, 37000 and 39000 pM for mKV1.3, mKV1.1, hKV1.6, mKV1.4 and rKV1.2 respectively, and >100000 pM for hKV1.5, mKV1.7, hKV3.1, rKV3.4 and hKCa4). Suppresses T cell activation in vitro (IC50 < 500 pM).

Technical Data

M.Wt:
4012.7
Formula:
C166H268N54O48S7
Sequence:
RSCIDTIPKSRCTAFQCKHSMXYRLSFCRKTCGTC

(Modifications: Disulfide bridges: 3-35,12-28,17-32), X= Dap)

Solubility:
Soluble to 1 mg/ml in water
Storage:
Store at -20°C
CAS No:
220384-25-8

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

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Robbins et al (2005) Hypoxia modulates early events in T cell receptor-mediated activation in human T lymphocytes via KV1.3 channels. J.Physiol. 564 131. PMID: 15677684.

Kalman et al (1998) ShK-Dap22, a potent KV1.3-specific immunosuppresive polypeptide. J.Biol.Chem. 273 32697. PMID: 9830012.

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Keywords: ShK-Dap22, supplier, toxins, potassium, channels, Kv1.3, potent, selective, blockers, inhibitors, inhibits, immunosuppressives, T, cells, Tocris Bioscience, Voltage-gated Potassium (KV) Channel Blocker products

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