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Urotensin II-related peptide

CAS# 342878-90-4

Urotensin II-related peptide

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Chemical structure

Urotensin II-related peptide

3D structure

Chemical Properties of Urotensin II-related peptide

Cas No. 342878-90-4 SDF Download SDF
PubChem ID 72793454 Appearance Powder
Formula C49H64N10O10S2 M.Wt 1017.23
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 1 mg/ml in 5% acetonitrile / sterile water
Chemical Name (2S)-2-[[(4R,7S,10S,13S,16S,19R)-10-(4-aminobutyl)-19-[[(2S)-2-aminopropanoyl]amino]-16-benzyl-7-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]amino]-3-methylbutanoic acid
SMILES CC(C)C(C(=O)O)NC(=O)C1CSSCC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)NC(C(=O)N1)CC2=CC=C(C=C2)O)CCCCN)CC3=CNC4=CC=CC=C43)CC5=CC=CC=C5)NC(=O)C(C)N
Standard InChIKey WDZHTXUSYGCGPY-KOOAXUMWSA-N
Standard InChI InChI=1S/C49H64N10O10S2/c1-27(2)41(49(68)69)59-48(67)40-26-71-70-25-39(57-42(61)28(3)51)47(66)55-36(21-29-11-5-4-6-12-29)44(63)56-38(23-31-24-52-34-14-8-7-13-33(31)34)46(65)53-35(15-9-10-20-50)43(62)54-37(45(64)58-40)22-30-16-18-32(60)19-17-30/h4-8,11-14,16-19,24,27-28,35-41,52,60H,9-10,15,20-23,25-26,50-51H2,1-3H3,(H,53,65)(H,54,62)(H,55,66)(H,56,63)(H,57,61)(H,58,64)(H,59,67)(H,68,69)/t28-,35-,36-,37-,38-,39-,40-,41-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of Urotensin II-related peptide

DescriptionPotent endogenous agonist for the urotensin-II (UT) receptor. Binds with high affinity and potently activates recombinant rat and human UT receptors (EC50 values are 0.55 and 4.8 nM respectively). Produces hypotensive effects following systemic administration in rats.

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References on Urotensin II-related peptide

International Union of Basic and Clinical Pharmacology. XCII. Urotensin II, urotensin II-related peptide, and their receptor: from structure to function.[Pubmed:25535277]

Pharmacol Rev. 2015;67(1):214-58.

Urotensin II (UII) is a cyclic neuropeptide that was first isolated from the urophysis of teleost fish on the basis of its ability to contract the hindgut. Subsequently, UII was characterized in tetrapods including humans. Phylogenetic studies and synteny analysis indicate that UII and its paralogous peptide Urotensin II-related peptide (URP) belong to the somatostatin/cortistatin superfamily. In mammals, the UII and URP genes are primarily expressed in cholinergic neurons of the brainstem and spinal cord. UII and URP mRNAs are also present in various organs notably in the cardiovascular, renal, and endocrine systems. UII and URP activate a common G protein-coupled receptor, called UT, that exhibits relatively high sequence identity with somatostatin, opioid, and galanin receptors. The UT gene is widely expressed in the central nervous system (CNS) and in peripheral tissues including the retina, heart, vascular bed, lung, kidney, adrenal medulla, and skeletal muscle. Structure-activity relationship studies and NMR conformational analysis have led to the rational design of a number of peptidic and nonpeptidic UT agonists and antagonists. Consistent with the wide distribution of UT, UII has now been shown to exert a large array of biologic activities, in particular in the CNS, the cardiovascular system, and the kidney. Here, we review the current knowledge concerning the pleiotropic actions of UII and discusses the possible use of antagonists for future therapeutic applications.

Concordant localization of functional urotensin II and urotensin II-related peptide binding sites in the rat brain: Atypical occurrence close to the fourth ventricle.[Pubmed:24478001]

J Comp Neurol. 2014 Aug 1;522(11):2634-49.

Urotensin II (UII) and Urotensin II-related peptide (URP) are structurally related paralog peptides that exert peripheral and central effects. UII binding sites have been partly described in brain, and those of URP have never been reported. We exhaustively compared [(125)I]-UII and -URP binding site distributions in the adult rat brain, and found that they fully overlapped at the regional level. We observed UII/URP binding sites in structures lining ventricles, comprising the sphenoid nucleus and cell rafts scattered on a line joining the fourth ventricle and its lateral recess. After injection of UII and URP in the lateral ventricle, we observed c-Fos-positive cell nuclei in areas close to the fourth ventricle, indicating that these receptors are functional. Different c-Fos-containing cell populations were activated. They were all positive for vimentin and glial fibrillary acidic protein (GFAP), excluding the possibility of an ependymal nature. In conclusion, this study demonstrated that UII and URP binding sites are totally overlapping and that these sites were functional in regions bordering the fourth ventricle. These data support a role for UII/URP at the interface between brain parenchyma and cerebrospinal fluid.

Generation of BAC transgenic tadpoles enabling live imaging of motoneurons by using the urotensin II-related peptide (ust2b) gene as a driver.[Pubmed:25658845]

PLoS One. 2015 Feb 6;10(2):e0117370.

Xenopus is an excellent tetrapod model for studying normal and pathological motoneuron ontogeny due to its developmental morpho-physiological advantages. In mammals, the Urotensin II-related peptide (UTS2B) gene is primarily expressed in motoneurons of the brainstem and the spinal cord. Here, we show that this expression pattern was conserved in Xenopus and established during the early embryonic development, starting at the early tailbud stage. In late tadpole stage, uts2b mRNA was detected both in the hindbrain and in the spinal cord. Spinal uts2b+ cells were identified as axial motoneurons. In adult, however, the uts2b expression was only detected in the hindbrain. We assessed the ability of the uts2b promoter to drive the expression of a fluorescent reporter in motoneurons by recombineering a green fluorescent protein (GFP) into a bacterial artificial chromosome (BAC) clone containing the entire X. tropicalis uts2b locus. After injection of this construction in one-cell stage embryos, a transient GFP expression was observed in the spinal cord of about a quarter of the resulting animals from the early tailbud stage and up to juveniles. The GFP expression pattern was globally consistent with that of the endogenous uts2b in the spinal cord but no fluorescence was observed in the brainstem. A combination of histological and electrophysiological approaches was employed to further characterize the GFP+ cells in the larvae. More than 98% of the GFP+ cells expressed choline acetyltransferase, while their projections were co-localized with alpha-bungarotoxin labeling. When tail myotomes were injected with rhodamine dextran amine crystals, numerous double-stained GFP+ cells were observed. In addition, intracellular electrophysiological recordings of GFP+ neurons revealed locomotion-related rhythmic discharge patterns during fictive swimming. Taken together our results provide evidence that uts2b is an appropriate driver to express reporter genes in larval motoneurons of the Xenopus spinal cord.

Development and pharmacological characterization of conformationally constrained urotensin II-related peptide agonists.[Pubmed:24251366]

J Med Chem. 2013 Dec 12;56(23):9612-22.

Urotensin II (UII) and its paralog peptide, Urotensin II-related peptide (URP), exert not only common but also divergent actions through the activation of UT, a specific membrane-bound receptor that belongs to the 1A G protein-coupled receptor subclass. In this study, we have designed and synthesized new URP analogues in which the intracyclic Trp residue was replaced with natural, unnatural, and constrained amino acids to determine important physicochemical features for receptor binding and activation. The biological data, highlighting the potent agonistic behavior of [Tiq(4)]URP and [Tpi(4)]URP, also suggest that the Trp residue, and more specifically the indole ring, is not critical for receptor interaction and could in fact be involved in the intramolecular stabilization of the bioactive conformation of URP. Finally, these analogues, which are intracyclic constrained URP-based agonists, could represent useful pharmacological tools for the study of the urotensinergic system.

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