A2202
ω-Agatoxin TK
~98% (HPLC), powder
Synonym(s):
ω-Aga-TK
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About This Item
Empirical Formula (Hill Notation):
C215H337N65O70S10
CAS Number:
Molecular Weight:
5273.02
UNSPSC Code:
12352202
NACRES:
NA.32
MDL number:
Form:
powder
Assay:
~98% (HPLC)
assay
~98% (HPLC)
form
powder
solubility
H2O: soluble (Aqueous stock solution is stable for 1 month at 2-8 °C and for several months at -20 °C.)
storage temp.
−20°C
Quality Level
Gene Information
human ... CACNA1A(773)
mouse ... CACNA1A(12286)
rat ... CACNA1A(25398)
Biochem/physiol Actions
Toxin found in the venom of the funnel web spider, Agelenopsis aptera. Potent, selective P-type and Q-type calcium-channel blocker, without effect on L-type, N-type, or T-type calcium channels. Used to differentiate the types of calcium channel active during various physiological processes
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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Q Q Sun et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 17(18), 6839-6849 (1997-09-15)
The primary sensory Rohon-Beard (R-B) neurons of Xenopus larvae are highly analogous to the C fibers of the mammalian pain pathway. We explored the actions of 5-HT by studying the modulation of Ca2+ currents. In approximately 80% of the acutely
T Teramoto et al.
Neuroreport, 6(12), 1684-1688 (1995-08-21)
We characterized the electrophysiological properties of calcium channels in cultured rat hippocampal neurones using omega-agatoxin-TK (omega-Aga-TK) and compared them with those of the P-type channel and the BI (alpha 1A) channel which resembles the Q-type channel. Two types of omega-Aga-TK-sensitive
T Teramoto et al.
Brain research, 756(1-2), 225-230 (1997-05-09)
We characterized the electrophysiological properties of calcium channels in cultured rat cerebral cortical neurons using omega-agatoxin-TK (omega-Aga-TK) by a patch-clamp technique. Two types of slowly inactivating calcium channels sensitive to omega-Aga-TK were detected. The first type showed high sensitivity to
Y Q Lin et al.
Journal of the autonomic nervous system, 73(1), 26-37 (1998-11-10)
The sympathetic preganglionic nerve terminals of the rat superior cervical ganglion were loaded with the calcium indicator oregon green 488 BAPTA-1 to measure the change in calcium concentration in the terminal boutons, (delta[Ca2+]b) following short (1 or 5 impulses) and
T Teramoto et al.
Biochemical and biophysical research communications, 196(1), 134-140 (1993-10-15)
In the course of purification of omega-Aga-IVA, a specific P-type calcium channel blocker, from the venom of Agelenopsis aperta we discovered a novel peptide. This peptide, named omega-agatoxin Tsukuba (omega-Aga-TK), also blocked P-type channels and was twelve times more abundant
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