|Reactivity||Human, Mouse, Rat|
|Calculated MW||49455 Da|
|Homology||All known vertebrate sequences - identical.|
|Other Names||Endothelin B receptor, ET-B, ET-BR, Endothelin receptor non-selective type, Ednrb|
|Related products for control experiments||Control peptide antigen (supplied with the antibody free of charge).|
|Target/Specificity||Peptide CEMLRKKSGMQIALND, corresponding to amino acid residues 298-314 of rat ET-B (Accession P21451). 3rd intracellularֲ loop.|
|Peptide Confirmation||Confirmed by mass-spectrography and amino acid analysis.|
|Application Details||Immunohistochemistry (IH): - Mouse retina (see Bramall, A.N. et al. (2013) in Product Citations). - Mouse retina (1:100) (see Rattner, A. and Nathans, J. (2005) in Product Citations). Immunocytochemistry (IC): - Human endocardial endothelial cells (EECs) (1:100) (see Jacques, D. et al.(2005) in Product Citations).|
|Format||Affinity purified antibody, lyophilized powder|
|Reconstitution||50 µl or 0.2 ml deionized water, depending on the sample size.|
|Antibody Concentration After Reconstitution||1 mg/ml.|
|Storage Before Reconstitution||Lyophilized powder can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.|
|Storage After Reconstitution||The reconstituted solution can be stored at 4ºC for up to 2 weeks. For longer periods, small aliquots should be stored at -20ºC or below. Avoid multiple freezing and thawing. The further dilutions should be made using a carrier protein such as BSA (1%). Centrifuge all antibody preparations before use (10000 × g 5 min).|
|Control Antigen Storage Before Reconstitution||Lyophilized powder can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.|
|Control Antigen Reconstitution||100 µl water.|
|Control Antigen Storage After Reconstitution||-20ºC.|
|Preadsorption Control||1 µg peptide per 1 µg antibody.|
|Formulation||Lyophilized powder. Reconstituted antibody contains phosphate buffered saline (PBS), pH 7.4, 1% BSA, 0.05% NaN3.|
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Provided below are standard protocols that you may find useful for product applications.
Endothelins (ET-1, 2, and 3) are considered to be very powerful vasoconstrictive substances. In humans, endothelins mediate their actions via two specific G-Protein coupled receptors, ETAR and ETBR. Both ETAR and ETBR are present in the heart and in human myocardium at similar levels.1,2 The endothelin receptors differ in their ligand specificity. While ETAR has varying affinities for the endothelin isoforms (ET-1 >ET-2>ET-3), ETBR shows no selective affinity.2,3 Subsequent studies have demonstrated the presence of endothelins in vascular as well as in non-vascular cells and tissues, having multiple biological activities. Currently there is increasing evidence that ET-1 may modulate mitogenesis, apoptosis, angiogenesis tumor invasion and the development of metastases.3 Until recently, it was thought that all cellular activities of the endothelins were mediated through their interactions with their cell surface receptors. However, a recent study demonstrated that cardiac nuclei also possess both ETAR and ETBR subtypes, which are functional and coupled to signaling mechanisms within the nuclear membrane.2 Hypermethylation of the ETBR correlated with transcriptional down-regulation and reduced expression of ETB receptor was observed in several prostate, bladder and colon cancer cell lines.3
References 1. Davenport, A.P. (2002) Pharmacol. Rev. 54, 219. 2. Boivin, B. et al. (2003) J. Biol.Chem. 278, 29153. 3. Grant, K. et al. (2003) Br. J. Cancer. 88, 163.
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