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About This Item

MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77
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Quality Level

Assay

≥98% (HPLC)

form

lyophilized powder

mol wt

6,542 Da

storage temp.

−20°C

Application

Dendrotoxin-K is suitable for use as a potassium voltage-gated channel subfamily A member 1 (Kv1.1) channel blocker in axon and human embryonic kidney (HEK293) cells. It has also been used as a selective blocker of Kv channels in mice.

Biochem/physiol Actions

Dendrotoxin-K (DTXk) is isolated from mamba snake Dendroaspis polylepis and interacts with the β-turn region in the N-terminal sequence of the potassium channel. It inhibits tumor progression in gefitinib-resistant non-small cell lung cancer cells. DTXk induces neuronal damage in the hippocampus via N-methyl-d-aspartate (NMDA) and non-NMDA receptors.
Dendrotoxin-K inhibits potassium channels that contain Kv1.1 protein only.

Features and Benefits

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.

Other Notes

Isolated initially from Dendroaspis polylepis polylepis venom

Preparation Note

Purified by a modification of the method of Schweitz.

Reconstitution

Reconstitute in 1 mL deionized water or buffer (pH 7.5) to yield 10 μM stock

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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