ShK toxin

Catalog No.: A68290
KV1.3 Channel Inhibitor
ShK toxin is a potent inhibitor of the voltage-dependent potassium channel (Kv1.3), derived from the Caribbean sea anemone Stichodactylus helianthus. This toxin competitively interacts with dendrotoxin I and α-dendrotoxin at synaptosomal membranes, enhancing acetylcholine release. In addition to its neural effects, ShK toxin effectively suppresses K+ currents in cultured rat dorsal root ganglion neurons and demonstrates significant inhibition of T lymphocyte proliferation. It serves as a valuable tool in studies of neurophysiology and immunology.
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Research use only. We do not sell to patients.

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Adooq Products cited in reputable paper
Science VOLUME 380, ISSUE 6663 (2023)
Science VOLUME 369, ISSUE 6510 (2020)
Science VOLUME 356, ISSUE 6336 (2017)
Cell Vol. 185 Issue 23 p4428-4447.e28
Cell Vol 177, Issue 7, p1933-1947.e25
Cell Vol 156, Issue 5, p857-1114
Nature Volume 622 Issue 7982 (2023)
Nature volume 620, pages890-897 (2023)
Nature volume 610, pages540-546 (2022)
Nature volume 588, pages83-88 (2020)
Nature volume 574, pages268-272 (2019)
Nature volume 573, pages539-545 (2019)
Nature volume 567, pages118-122 (2019)
Nature volume 551, pages639-643 (2017)
Nature volume 551, pages247-250 (2017)
Nature volume 548, pages356-360 (2017)
Nature volume 545, pages187-192 (2017)
Biological Activity
DescriptionShK toxin is a potent inhibitor of the voltage-dependent potassium channel (Kv1.3), derived from the Caribbean sea anemone Stichodactylus helianthus. This toxin competitively interacts with dendrotoxin I and α-dendrotoxin at synaptosomal membranes, enhancing acetylcholine release. In addition to its neural effects, ShK toxin effectively suppresses K+ currents in cultured rat dorsal root ganglion neurons and demonstrates significant inhibition of T lymphocyte proliferation. It serves as a valuable tool in studies of neurophysiology and immunology.
Product Information
Catalog NumA68290
FormulaC169H274N54O48S7
Molecular Weight4054.80
CAS Number172450-46-3
SequenceArg-Ser-Cys-Ile-Asp-Thr-Ile-Pro-Lys-Ser-Arg-Cys-Thr-Ala-Phe-Gln-Cys-Lys-His-Ser-Met-Lys-Tyr-Arg-Leu-Ser-Phe-Cys-Arg-Lys-Thr-Cys-Gly-Thr-Cys (Disulfide bridge: Cys3-Cys35; Cys12-Cys28; Cys17-Cys32)
Sequence shorteningRSCIDTIPKSRCTAFQCKHSMKYRLSFCRKTCGTC (Disulfide bridge: Cys3-Cys35; Cys12-Cys28; Cys17-Cys32)
SynonymsStichodactyla helianthus neurotoxin
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