ω-agatoxin IVA / Omega agatoxin IVA

Catalog N 11AGA001

ω-agatoxin IVA: inhibits P/Q-type calcium channel (Cav2.1)

ω-agatoxin IVA (ω-AGA IVA) is a peptide originally isolated from funnel web-spider venom Agelenopsis aperta. This peptide is a specific blocker of P/Q-type calcium channel (Cav2.1). It has been reported that ω-agatoxin IVA is a potent blocker of voltage-gated calcium channels in insect and vertebrate central neurons. The binding site for ω-agatoxin IVA has been localized in part to the extracellular S3–S4 loop in repeat IV of the α-1A Ca2+ channels, which is proximal to the S4 sensor domain. This is coherent with its functional effect (no pore-blocking activity, but gating modifier by a shift of channel activation towards more depolarized potentials). This makes this toxin a voltage-dependent blocker of P/Q calcium channels.

Product specifications

AA sequence: Lys-Lys-Lys-Cys4-Ile-Ala-Lys-Asp-Tyr-Gly-Arg-Cys12-Lys-Trp-Gly-Gly-Thr-Pro-Cys19-Cys20-Arg-Gly-Arg-Gly-Cys25-Ile-Cys27-Ser-Ile-Met-Gly-Thr-Asn-Cys34-Glu-Cys36-Lys-Pro-Arg-Leu-Ile-Met-Glu-Gly-Leu-Gly-Leu-Ala-OH
(Disulfide bonds between Cys4-Cys20, Cys12-Cys25, Cys19-Cys36 and Cys27-Cys34)
Length (aa): 48
Formula: C217H360N68O60S10 
Molecular Weight: 5198.44 Da
Appearance: White lyophilized solid
Solubility: water and saline buffer
CAS number: 145017-83-0
Source: Synthetic 
Purity rate: > 97 %

Price & quantities

Other quantities available upon request