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A7475

Sigma-Aldrich

Anthopleurin-A trifluoroacetate salt

>88% (HPLC)

Synonym(s):

AP-A trifluoroacetate salt, Anthopleura toxin A trifluoroacetate salt

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About This Item

Empirical Formula (Hill Notation):
C220H326N64O67S6 · xC2HF3O2
Molecular Weight:
5131.72 (free base basis)
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.77

Assay

>88% (HPLC)

form

solid

storage temp.

−20°C

Amino Acid Sequence

Gly-Val-Ser-Cys-Leu-Cys-Asp-Ser-Asp-Gly-Pro-Ser-Val-Arg-Gly-Asn-Thr-Leu-Ser-Gly-Thr-Leu-Trp-Leu-Tyr-Pro-Ser-Gly-Cys-Pro-Ser-Gly-Trp-His-Asn-Cys-Lys-Ala-His-Gly-Pro-Thr-Ile-Gly-Trp-Cys-Cys-Lys-Gln [Disulfide bridges: 4-46, 6-36, 29-47]

General description

Synthetic peptide toxin that was originally isolated from the sea anemone, Anthopleura xantho­grammica.
Synthetic peptide toxin.

Application

Anthopleurin-A is a toxin used to study the gating mechanisms of sodium channels. Anthopleurin-A slows the repolarization phase of nerve and muscle action potentials by inactivating the sodium channel.

Biochem/physiol Actions

Anthopleurin-A slows the repolarization phase of nerve and muscle action potentials by inactivating the sodium channel. Anthopleurin-A shows a preference towards cardiac channels over the neuronal sodium channels. It is a toxin used to study the gating mechanisms of sodium channels.
Shown to have inotropic effects and not chronotropic effects on mammalian heart preparations.

Other Notes

supplied as trifluoroacetate salt

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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Y Pichon
Journal of physiology, Paris, 89(4-6), 171-180 (1995-01-01)
The physiological function of the axon is to conduct short all-or-none action potentials from their site of initiation (usually the cell body) to the synapse. To ensure this function, both passive and active biophysical properties of the axons are tuned
W Shimizu et al.
Circulation, 96(6), 2038-2047 (1997-10-10)
This study examines the contribution of transmural heterogeneity of transmembrane activity to phenotypic T-wave patterns and the effects of pacing and of sodium channel block under conditions mimicking HERG and SCN5A defects linked to the congenital long-QT syndrome (LQTS). A
N el-Sherif et al.
Circulation research, 79(3), 474-492 (1996-09-01)
We have previously developed a canine in vivo model of the long QT syndrome (LQTS) using the neurotoxin anthopleurin A (AP-A), which acts by slowing sodium channel inactivation. The recent discovery of a genetic mutation in the cardiac sodium channel
Y Chung et al.
The American journal of physiology, 271(2 Pt 2), H687-H695 (1996-08-01)
Perfused rat heart experiments focused on determining the critical O2 level in postischemic myocardium. After a 20-min global ischemia, reperfusion began with O2-saturated saline buffer reflowing at different rates (0.5-12 ml/min). The 1H nuclear magnetic resonance (NMR) signal of the
Daisuke Izumi et al.
Heart rhythm, 9(5), 796-803 (2011-11-30)
Previous studies have showed that the interval between the peak and the end of the T wave (Tp-e) is a marker of transmural dispersion of ventricular repolarization. We studied the relationship between (a) the Tp-e on local pseudo transmural electrograms

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