1. Signaling Pathways
  2. GPCR/G Protein
  3. Endothelin Receptor

Endothelin Receptor

Endothelin receptors are G protein-coupled receptors (GPCRs) of the β-group of rhodopsin receptors that bind to endothelin ligands, which are 21 amino acid long peptides derived from longer prepro-endothelin precursors. There are at least four types known, ETA, ETB (ETB1, ETB2) and ETC. The ETA receptor is characterized by having high affinity and selectivity for ET-1 and ET-2 compared to ET-3, whereas the ETB receptor has equivalent high affinity for all three endothelin isopeptides.

Endothelins are synthesized in several tissues, including the vascular endothelium (ET-1 exclusively) and smooth muscle cells. Released endothelin binds to the endothelin receptors ETA and ETB, the ETA receptors on vascular smooth muscle cells mediating vasoconstriction, and the ETB receptors on the endothelium linked to nitric oxide (NO) and prostacyclin release.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-101598
    PD-159020
    Antagonist
    PD-159020 is a non-selective ETA/ETB antagonist, with IC50s of 30 and 50 nM for hETA and hETB, respectively.
    PD-159020
  • HY-19274
    ZD-1611
    Antagonist
    ZD-1611 is a potent, orally active, selective ETA receptor antagonist, used for the research of ischemic stroke.
    ZD-1611
  • HY-17352A
    Clazosentan disodium
    Antagonist
    Clazosentan disodium (Ro 61-1790) is a selective endothelin A (ETA) receptor antagonist. Clazosentan disodium inhibits ET-1-mediated vasoconstriction. Clazosentan disodium prevents cerebral vasospasm, vasospasm-related cerebral infarction.
    Clazosentan disodium
  • HY-15895R
    Aprocitentan (Standard)
    Antagonist
    Aprocitentan (Standard) is the analytical standard of Aprocitentan. This product is intended for research and analytical applications. Aprocitentan (ACT-132577) is the major and pharmacologically active metabolite of Macitentan. Aprocitentan is dual ETA/ETB antagonist with IC50s of 3.4 nM and 987 nM, and pA2 valus of 6.7 and 5.5, respectively.
    Aprocitentan (Standard)
  • HY-19210
    SB-209670
    Antagonist
    SB-209670 is an extremely potent and highly specific non-peptide, subnanomolar endothelin (ET) receptor antagonist. SB 209670 selectively inhibits binding of 125I-labeled ET-1 to cloned human ET receptor subtypes ETA and ETB (Ki=0.2 and 18 nM, respectively). SB 209670 produces a dose-dependent reduction in blood pressure in hypertensive rats, protects from ischemia-induced neuronal degeneration in a gerbil stroke model, and attenuates neointima formation following rat carotid artery balloon angioplasty.
    SB-209670
  • HY-N5170
    Aselacin A
    Antagonist
    Aselacin A targets endothelin-1 receptor (ET-1 receptor), inhibits the the binding of ET-1 to ETA receptor and ETB receptor. Aselacin A inhibits the ET-1 binding to bovine atrial membrane and porcine cerebral membrane with IC50 of 22 μg/mL and 20 μg/mL. Aselacin A can be used for research of cardiovascular diseases.
    Aselacin A
  • HY-120843
    WS009A
    Antagonist
    WS009A is an antagonist for endothelin receptor (ET Receptor) with IC50 of 5.8 and 6.9 μM for ET-1 receptor and ET-2 receptor. WS009A can be used in research of cardiovascular diseases.
    WS009A
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity

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