Human GPR56 Alexa Fluor® 350-conjugated Antibody

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FAB4636U-100UG
R&D Systems Antibodies
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Human GPR56 Alexa Fluor® 350-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human GPR56 in direct ELISA.
Source
Monoclonal Mouse IgG2B Clone # 776123
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Chinese hamster ovary cell line CHO-derived recombinant human GPR56
Met1-Val342
Accession # Q9Y653
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 350 (Excitation= 346 nm, Emission= 442 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
Human peripheral blood cells

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: GPR56

GPR56 is a member of the LN-TM7 family of adhesion-type 7-transmembrane (TM) G-protein coupled receptors (GPCR) with long extracellular N-termini (1‑3). The 693 amino acid (aa) human GPR56 contains a 25 aa signal sequence, a 377 aa N-terminal extracellular domain (ECD) and seven TM regions separated by short intracellular and extracellular regions. Like other LN-TM7 members, the ECD contains a highly glycosylated mucin-like stalk followed by a GPCR proteolytic cleavage site (GPS) (1, 4). Cleavage of the 60 kDa N-terminus from the 80 kDa full length form is needed for efficient cell surface expression (5, 6). While the cleaved portion may remain non-covalently associated, it has also been found in conditioned medium of cultured cells (5). Human GPR56 shares 71%, 72%, 80%, 80% and 79% aa identity with mouse, rat, canine, equine, and bovine GPR56 within the cleaved ECD. A functional splice variant lacking the GPS site and a non-functional splice variant lacking portions of the TM domains have also been described (4). A human brain developmental disorder, bilateral frontoparietal polymicrogyria, is associated with GPR56 mutations that also show impaired GPS cleavage, intracellular trafficking, and expression at the cell surface (5). GPR56 is widely distributed, with highest mRNA or expressed sequence tag expression in brain, thyroid, skin and female reproductive system (3, 4). GPR56 expression is upregulated during cell transformation and is high in melanomas, glioblastomas and astrocytomas, but downregulated in melanomas with high metastatic potential (2, 6‑8). Although the function of GPR56 is not completely known, it is clearly an adhesion protein (6‑8). Tissue transglutaminase (TG2) is one reported ligand, binding of which inhibits melanoma growth and metastasis (6). Association of GPR56 with the tetraspanin CD81 stabilizes its complex with Gaq/11 for cell signaling (9).

References
  1. Fredriksson, R. et al. (2002) FEBS Lett. 531:407.
  2. Zendman, A.J.W. et al. (1999) FEBS Lett. 446:292.
  3. Liu, M. et al. (1999) Genomics 55:296.
  4. Bjarnadottir, T.K. et al. (2007) Gene 387:38.
  5. Jin, Z. et al. (2007) Hum. Mol. Genet. 16:1972.
  6. Xu, L. et al. (2006) Proc. Natl. Acad. Sci. USA 103:9023.
  7. Shashidhar, S. et al. (2005) Oncogene 24:1673.
  8. Ke, N. et al. (2007) Mol. Cancer Ther. 6:1840.
  9. Little, K.D. et al. (2004) Mol. Biol. Cell 15:2375.
Long Name
G Protein-coupled Receptor 56
Entrez Gene IDs
9289 (Human); 14766 (Mouse); 260326 (Rat)
Alternate Names
BFPP; EGF-TM7-like; G protein-coupled receptor 56,7-transmembrane protein with no EGF-like N-terminal domains-1; GPR56; Protein TM7XN1; TM7LN4; TM7LN4G-protein coupled receptor 56; TM7XN1; TM7XN1DKFZp781L1398

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Product Specific Notices


This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.

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