|Application ||WB, LCI|
|Reactivity||Human, Mouse, Rat|
|Calculated MW||43199 Da|
|Homology||Rat, mouse, dog - identical.|
|Other Names||Gastrin-releasing peptide receptor, GRP-R, GRP-preferring bombesin receptor, GRPR|
|Related products for control experiments||Control peptide antigen (supplied with the antibody free of charge).|
|Target/Specificity||Peptide (C)RSYHYSEVDTSMLH, corresponding to aminoֲ acidֲ residues 287-300 of human BB2 (Accession P30550). 3rd extracellular loop.|
|Peptide Confirmation||Confirmed by amino acid analysis.|
|Format||Affinity purified antibody, lyophilized powder|
|Reconstitution||50 µl or 0.2 ml deionized water, depending on the sample size.|
|Antibody Concentration After Reconstitution||0.8 mg/ml.|
|Buffer After Reconstitution||Phosphate buffered saline (PBS), pH 7.4, 1% BSA, 0.025% NaN3.|
|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|
|Control Antigen Reconstitution||100 µl water.|
|Control Antigen Storage After Reconstitution||-20ºC.|
|Preadsorption Control||1 µg peptide per 1 µg antibody.|
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Provided below are standard protocols that you may find useful for product applications.
Bombesin receptor 2 (BB2) is a member of a family of receptors that binds the 14 amino acid peptide, bombesin. Bombesin was first isolated from frog skin and it was later established that mammals express endogenous bombesin-like peptides such as gastrin-releasing peptide (GRP; a 27 amino acid homologue) and neuromedin B (NMB; a 10 amino acid homologue). BB2 is the preferred receptor for GRP and hence it is also referred to as GRP receptor or GRP-R.1 BB1 is the preferred receptor for NMB and therefore it is also known as NMB-R. A third member (called BB3) of the bombesin receptor family has been recognized but the endogenous mammalian ligand for this receptor remains to be identified. All three bombesin receptors are members of the seven-transmembrane domain, G protein-coupled receptor (GPCR) superfamily. BB2 is coupled to a Gq/11 protein that activates phospholipase C (PLC) and leads to production of inositol 1,4,5-trisphosphate (InsP3), intracellular Ca2+ mobilization, and cell growth.2 GRP (through its binding to BB2) plays an essential role in the release of hormones in the intestinal tract, the regulation of smooth muscle contraction, and the secretion of pancreatic enzymes.2 In the brain, BB2 has been implicated in regulating feeding behavior, thermoregulation, and memory formation.3 Finally, BB2 is overexpressed in several human tumors including breast, prostate, and lung, where it acts as a growth factor receptor inducing tumor growth. BB2 is considered a potential target for the development of both diagnostics and anti-cancer therapies.4 Abgent is pleased to offer a highly specific antibody directed against an epitope located in the 3rd extracellular loop of the human BB2 receptor. Anti-Bombesin Receptor 2 (extracellular) antibody (#AG1369) can be used in western blot analysis, as well as immunocytochemical and immunohistochemical applications, and will recognize BB2 from human, rat, mouse, and dog samples.
References 1. Battey, J.F. et al. (1991) Proc Natl Acad Sci USA 88, 395. 2. Kroog, G.S. et al.(1995) Med. Res. Rev. 15, 389. 3. Ohki-Hamazaki, H. et al. (2005) Int. J. Dev. Biol. 49, 293. 4. Reubi, J.C. (2003) Endocr. Rev. 24, 389.
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