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Results for "

Polypeptide toxin

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Calcium Channel (2) NO Synthase (1) Potassium Channel (1) Sodium Channel (1)
By Research Areas:	Cardiovascular Disease (3) Infection (1) Inflammation/Immunology (1)

Inhibitors & Agonists

Peptides

Targets Recommended: PACAP Receptor CD74

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-P3269

Calciseptine	Calcium Channel	Cardiovascular Disease
Calciseptine is a natural polypeptide toxin found in the venom of the black mamba snake (Dendroaspis p. polylepis). Calciseptine is a highly effective and selective blocker of the L-type channel of the Cav1.2 subtype, with an IC₅₀ value of 92 nM. Calciseptine has no effect on Cav3.1, Cav2.2, Cav2.1, Cav1.1, voltage-sensitive sodium channels and potassium channels. Calciseptine exhibits negative inotropic and negative relaxant effects on mice, and does not affect heart rate or the action potential of sinoatrial node pacemaker cells. Calciseptine can be used for research on cardiovascular diseases_[1].

HY-P1441

Mambalgin 1	Sodium Channel	Others
Mambalgin-1 is a toxin isolated from black mamba venom. Mambalgin-1 is a disulfide-rich polypeptide consisting of 57 amino acids and belongs to the family of three-finger toxins. Mambalgin-1 can bind to and stabilize ASICs (acid-sensing ion channels) in a physiologically relevant closed-channel conformation .

HY-P3168

Martentoxin	Potassium Channel NO Synthase	Cardiovascular Disease Inflammation/Immunology
Martentoxin, a 4,046 Da polypeptide toxin, is a large-conductance Ca ²⁺-activated K ⁺ (BK_Ca) channel inhibitor. Martentoxin attenuates NO release, inhibits iNOS activation and upregulates eNOS mRNA expression in HUVECs induced by TNF-α. Martentoxin can be used for vascular diseases research .

HY-P3565

Sarafotoxin S6d STX-b	Calcium Channel	Cardiovascular Disease
Sarafotoxin S6d (STX-b) is a polypeptide toxin isolated from the venom of the Israeli sand boa constrictor. Sarafotoxin S6d induces multiple electrocardiogram (ECG) changes including myocardial ischemia and hyperkalemia. Sarafotoxin S6d induces strong extracellular calcium-dependent vasoconstriction in rat aorta and exhibits positive inotropic effects in rat atria. Sarafotoxin S6d can be used in the study of cardiovascular diseases .

Cat. No.	Product Name	Target	Research Area

HY-P2695

STh	Peptides	Infection
STh, an Escherichia coli heat-stable toxin, is a 19 amino acid polypeptide encompassing three disulfide bridges. STh is an antigen of interest in the search for a broad coverage enterotoxigenic Escherichia coli (ETEC) vaccine .

HY-P3269

Calciseptine	Calcium Channel	Cardiovascular Disease
Calciseptine is a natural polypeptide toxin found in the venom of the black mamba snake (Dendroaspis p. polylepis). Calciseptine is a highly effective and selective blocker of the L-type channel of the Cav1.2 subtype, with an IC₅₀ value of 92 nM. Calciseptine has no effect on Cav3.1, Cav2.2, Cav2.1, Cav1.1, voltage-sensitive sodium channels and potassium channels. Calciseptine exhibits negative inotropic and negative relaxant effects on mice, and does not affect heart rate or the action potential of sinoatrial node pacemaker cells. Calciseptine can be used for research on cardiovascular diseases_[1].

HY-P1441

Mambalgin 1	Sodium Channel	Others
Mambalgin-1 is a toxin isolated from black mamba venom. Mambalgin-1 is a disulfide-rich polypeptide consisting of 57 amino acids and belongs to the family of three-finger toxins. Mambalgin-1 can bind to and stabilize ASICs (acid-sensing ion channels) in a physiologically relevant closed-channel conformation .

HY-P3168

Martentoxin	Potassium Channel NO Synthase	Cardiovascular Disease Inflammation/Immunology
Martentoxin, a 4,046 Da polypeptide toxin, is a large-conductance Ca ²⁺-activated K ⁺ (BK_Ca) channel inhibitor. Martentoxin attenuates NO release, inhibits iNOS activation and upregulates eNOS mRNA expression in HUVECs induced by TNF-α. Martentoxin can be used for vascular diseases research .

HY-P3565

Sarafotoxin S6d STX-b	Calcium Channel	Cardiovascular Disease
Sarafotoxin S6d (STX-b) is a polypeptide toxin isolated from the venom of the Israeli sand boa constrictor. Sarafotoxin S6d induces multiple electrocardiogram (ECG) changes including myocardial ischemia and hyperkalemia. Sarafotoxin S6d induces strong extracellular calcium-dependent vasoconstriction in rat aorta and exhibits positive inotropic effects in rat atria. Sarafotoxin S6d can be used in the study of cardiovascular diseases .

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BODIPY 493/503 purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 1;16(1):1241. [Abstract]

MedchemExpress Validation 01

Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature. Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature. Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature.

BODIPY 493/503 purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 1;16(1):1241. [Abstract]

MedchemExpress Validation 01

MedchemExpress Validation 03

Western blot analysis of extracts from THP-1(lane 2(20μg), Jurkat (lane 3(20μg) and NIH3T3(lane 4(20μg) using FOXO1A (HY-P80132) Rabbit mAb. Proteins were transferred

MedchemExpress Validation 04

MedchemExpress Validation

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