ProTx I
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Description: CaV3.1 blocker; also inhibits NaV1.8 and KV2.1
Biological Activity
ProTx I is a selective CaV3.1 channel blocker (IC50 values are 0.2 and 31.8 μM for hCaV3.1 and hCaV3.2 respectively). Also reversibly inhibits NaV1.8 and blocks KV2.1 channels.Technical Data
M.Wt:
3987.51
Formula:
C171H245N53O47S6
Sequence:
ECRYWLGGCSAGQTCCKHLVCSRRHGWCVWDGTFS
(Modifications: Disulfide bridge: 2-16, 9-21, 15-28)
Solubility:
Soluble to 2 mg/ml in water
Storage:
Store at -20°C
CAS No:
484598-35-8
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Background References
-
Tarantula toxin ProTx-I differentiates between human T-type voltage-gated Ca2+ channels Cav3.1 and Cav3.2.
Ohkubo et al.
J.Pharmacol.Sci., 2010;112:452 -
T-type voltage-activated calcium channel Cav3.1, but not Cav3.2, is involved in the inhibition of proliferation and apoptosis in MCF-7 human breast cancer cells.
Ohkubo and Yamazaki
Int.J.Oncol., 2012;41:267 -
Two tarantula peptides inhibit activation of multiple sodium channels.
Middleton et al.
Biochemistry, 2002;41:14734
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