DC Chemicals Limited
China
Product Name: Iberiotoxin
Price: $Inquiry/100mg $Inquiry/250mg $Inquiry/1g
Purity: 98.0%
Stocking Period: 3 Day
Contact: Tony Cao

129203-60-7

129203-60-7 structure

Name: Iberiotoxin
Chemical Name: 5-amino-2-[[2-[[10-[[6-amino-2-[[6-amino-2-[[2-[[2-[[7,34-bis(4-aminobutyl)-37-[[2-[[2-[[2-[[10-(4-aminobutyl)-22-[[3-carboxy-2-[[2-[[3-carboxy-2-[[3-hydroxy-2-[[2-[(5-oxopyrrolidine-2-carbonyl)amino]-3-phenyl-propanoyl]amino]butanoyl]amino]propanoyl]amino]-3-methyl-butanoyl]amino]propanoyl]amino]-7-(2-carboxyethyl)-13,19-bis(hydroxymethyl)-16-isopropyl-6,9,12,15,18,21-hexaoxo-1,2-dithia-5,8,11,14,17,20-hexazacyclotricosane-4-carbonyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-hydroxy-propanoyl]amino]-3-methyl-butanoyl]amino]-25-benzyl-16,31-bis(carboxymethyl)-13-(3-guanidinopropyl)-28-isobutyl-19-isopropyl-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carbonyl]amino]-4-methylsulfanyl-butanoyl]amino]acetyl]amino]hexanoyl]amino]hexanoyl]amino]-7-(3-guanidinopropyl)-6,9-dioxo-1,2-dithia-5,8-diazacycloundecane-4-carbonyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-5-oxo-pentanoic acid
CAS Number: 129203-60-7
Molecular Formula: C₁₇₉H₂₇₄N₅₀O₅₅S₇
Molecular Weight: 4230.85
Catalog: Signaling Pathways Membrane Transporter/Ion Channel Potassium Channel
Create Date: 2018-05-29 09:04:04
Modify Date: 2024-01-02 08:26:54
Iberiotoxin is a toxin isolated from Buthus tamulus scorpion venom. Iberiotoxin is a selective high conductance high conductance Ca2+-activated K+ channel inhibitor with a Kd of ~1 nM. Iberiotoxin does not block other types of voltage-dependent ion channels[1][2][3].

Name	5-amino-2-[[2-[[10-[[6-amino-2-[[6-amino-2-[[2-[[2-[[7,34-bis(4-aminobutyl)-37-[[2-[[2-[[2-[[10-(4-aminobutyl)-22-[[3-carboxy-2-[[2-[[3-carboxy-2-[[3-hydroxy-2-[[2-[(5-oxopyrrolidine-2-carbonyl)amino]-3-phenyl-propanoyl]amino]butanoyl]amino]propanoyl]amino]-3-methyl-butanoyl]amino]propanoyl]amino]-7-(2-carboxyethyl)-13,19-bis(hydroxymethyl)-16-isopropyl-6,9,12,15,18,21-hexaoxo-1,2-dithia-5,8,11,14,17,20-hexazacyclotricosane-4-carbonyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-hydroxy-propanoyl]amino]-3-methyl-butanoyl]amino]-25-benzyl-16,31-bis(carboxymethyl)-13-(3-guanidinopropyl)-28-isobutyl-19-isopropyl-6,9,12,15,18,21,24,27,30,33,36-undecaoxo-1,2-dithia-5,8,11,14,17,20,23,26,29,32,35-undecazacyclooctatriacontane-4-carbonyl]amino]-4-methylsulfanyl-butanoyl]amino]acetyl]amino]hexanoyl]amino]hexanoyl]amino]-7-(3-guanidinopropyl)-6,9-dioxo-1,2-dithia-5,8-diazacycloundecane-4-carbonyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-5-oxo-pentanoic acid
Synonyms	MFCD00131365

Description	Iberiotoxin is a toxin isolated from Buthus tamulus scorpion venom. Iberiotoxin is a selective high conductance high conductance Ca2+-activated K+ channel inhibitor with a Kd of ~1 nM. Iberiotoxin does not block other types of voltage-dependent ion channels[1][2][3].
Related Catalog	Research Areas >> Cardiovascular Disease Signaling Pathways >> Membrane Transporter/Ion Channel >> Potassium Channel
Target	Kd: 1 nM (Ca2+-activated K+ channel)[1][3]
In Vitro	Iberiotoxin reversibly blocks Ca2+-activated K+ channel in excised membrane patches from bovine aortic smooth muscle. Iberiotoxin acts exclusively at the outer face of the channel and functions with IC50 values of about 250 pM. Iberiotoxin is a partial inhibitor of 125I-charybdotoxin binding in bovine aortic sarcolemmal membrane vesicles (Ki of 250 pM). Iberiotoxin functions as a noncompetitive inhibitor of charybdotoxin binding[1]. Iberiotoxin treatment affects rat mesenchymal stem cells (rMSCs) migration in the absence of platelet lysate (PL) by inducing a decrease in cell migration suggesting that BK channels regulate rMSCs migration in basal conditions. 10 nM of Iberiotoxin abolishes the PL-induced migration effect on MSCs[2].
In Vivo	Male Wistar rats (6-7 weeks old) with chronic heart failure (CHF), Iberiotoxin (0.125 nmol/nl, 1.25 nmol/nl and 12.5 nmol/nl) is infused into paraventricular hypothalamic nucleus (PVN) by osmotic minipumps. After perfusion of Iberiotoxin by microinjection of rAAV2-KCNMB4 shRNA virus, right ventricular weight/body weight and lung weight/body weight ratio as well as left ventricular end-diastolic diameter are increased and left ventricular ejection fraction is decreased[4].
References	[1]. A Galvez, et al. Purification and Characterization of a Unique, Potent, Peptidyl Probe for the High Conductance Calcium-Activated Potassium Channel From Venom of the Scorpion Buthus Tamulus. J Biol Chem. 1990 Jul 5;265(19):11083-90. [2]. Santiago Echeverry, et al. Activation of BK Channel Contributes to PL-Induced Mesenchymal Stem Cell Migration. Front Physiol. 2020 Mar 24;11:210. [3]. S Candia, et al. Mode of Action of Iberiotoxin, a Potent Blocker of the Large Conductance Ca(2+)-activated K+ Channel. Biophys J. 1992 Aug;63(2):583-90. [4]. R J Wang, et al. Downregulation of Large Conductance Calcium-Activated Potassium Channels in Paraventricular Nucleus Contributes to Sympathoexcitation in Rats With Chronic Heart Failure. Zhonghua Xin Xue Guan Bing Za Zhi. 2018 Mar 24;46(3):178-186.

Molecular Formula	C₁₇₉H₂₇₄N₅₀O₅₅S₇
Molecular Weight	4230.85
Storage condition	-20°C

Hazard Codes	T+
Risk Phrases	R26/27/28
Safety Phrases	S28;S45;S36/S37
RIDADR	UN 3462 6.1/PG 2

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