[Ala1,3,11,15]-Endothelin 1

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

storage temp.


SMILES string




InChI key


Gene Information

human ... EDNRB(1910)
mouse ... EDNRB(13618)
rat ... EDNRB(50672)

Amino Acid Sequence


General description

[Ala1,3,11,15]-Endothelin 1 is a linear endothelin (ET)-1 analogue, and acts as an ETB receptor agonist. ET-1 is a peptide that acts as both, a vasodilator and a vasoconstrictor. It is a ligand for ET receptor, which is of two types, ETA and ETB. ETB receptor is found in the vascular endothelial cells of cardiovascular tissues.


[Ala1,3,11,15]-Endothelin 1 may be used to assess the effects of endothelin-1 and [Ala1,3,11,15]-endothelin 1 produced by ETA and ETB receptors, in the presence of BQ-123, in anaesthetized rat.

Biochem/physiol Actions

Selective agonist for ETB endothelin receptors.


Skull and crossbones

Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

J Green
International journal of peptide and protein research, 41(5), 492-498 (1993-05-01)
[Ala1,3,11,15]-Endothelin-1, a linear analogue of endothelin-1 in which alanines replace the cystine residues, has been prepared by solid-phase synthesis in approximately 17% yield. Fmoc amino acids were coupled using an economical modified double-coupling (symmetrical anhydride followed by O-benzotriazolyl ester) procedure...
P S Widdowson et al.
British journal of pharmacology, 118(8), 2126-2130 (1996-08-01)
1. We performed radioligand binding experiments on rat cerebellar homogenates using [125I]-endothelin-1 ¿[1251]-ET-1¿ and [125I]-BQ3020 to examine the pharmacology of endothelin receptors in rat brain. Saturation experiments demonstrated a single population of binding sites with high affinity for both radioligands...
J Wong et al.
Pediatric research, 35(6), 664-670 (1994-06-01)
The physiologic role of endothelin-1 (ET-1) and its receptors in regulating fetal pulmonary vascular tone is unknown. We therefore investigated the role of ET-1 and its receptors in the regulation of fetal pulmonary vascular tone using BQ 123 (an ETa...
T Saeki et al.
Biochemical and biophysical research communications, 179(1), 286-292 (1991-08-30)
A linear peptide analog of endothelin (ET)-1, [Ala1,3,11,15]ET-1 (4AlaET-1), and its truncated peptide analogs were synthesized to study the structural requirements of ET-1 for the recognition of ETs-nonselective ETB receptors. ET-1 exhibited sub-nanomolar binding to two distinct ET receptor subtypes...
J Wong et al.
Journal of cardiovascular pharmacology, 25(2), 207-215 (1995-02-01)
The hemodynamic effects of endothelin-1 (ET-1) are mediated by at least two distinct receptors: ETa and ETb receptors. Recently, ETb receptor agonists (4 Ala ET-1 and IRL 1620) were developed. To investigate the role of ETb receptor activation on the...

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