Human OSMR beta Antibody Summary
Glu28-Ser739
Accession # Q99650
Applications
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.
Scientific Data
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Detection of OSM R beta in HeLa Human Cell Line by Flow Cytometry. HeLa human cervical epithelial carcinoma cell line was stained with Goat Anti-Human OSM R beta Antigen Affinity-purified Polyclonal Antibody (Catalog # AF4389, filled histogram) or isotype control antibody (Catalog # AB-108-C, open histogram), followed by Phycoerythrin-conjugated Anti-Goat IgG Secondary Antibody (Catalog # F0107).
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OSM R beta Specificity is Shown by Flow Cytometry in Knockout Cell Line. OSM R beta knockout HeLa epithelial carcinoma cell line was stained with Mouse Anti-Human OSM R beta Affinity Purified Polyclonal Antibody (Catalog # AF4389, filled histogram) or isotype control antibody (Catalog # AB-108-C, open histogram) followed by PE-conjugated anti-Goat IgG Secondary Antibody (Catalog # F0107). No staining in the OSM R beta knockout HeLa cell line was observed. View our protocol for Staining Membrane-associated Proteins.
Reconstitution Calculator
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: OSMR beta
OSM R beta is a 150‑180 kDa member of the IL-6 receptor family. It associates with gp130 to form the type II OSM receptor that is responsive to OSM. The gp130 subunit is shared by other IL-6 family cytokine receptors (1, 2, 3, 4), and OSM R beta associates with gp130-like receptor (GPL) to form a receptor complex responsive to IL-31 (5, 6). The human OSM R beta cDNA encodes a 979 amino acid (aa) precursor that includes a 27 aa signal sequence, a 712 aa extracellular domain (ECD), a 22 aa transmembrane segment, and a 218 aa cytoplasmic domain. The ECD contains one partial and one complete hematopoietin domain, an Ig-like domain, and three fibronectin type-III domains. The cytoplasmic domain contains box1, 2, and 3 motifs (7). Within the ECD, human OSM R beta shares 55%, 58%, 61%, and 72% aa sequence identity with mouse, rat, bovine, and canine OSM R beta, respectively. It also shares 31% aa sequence identity with human LIF R, but less than 20% aa sequence identity with human CNTF R alpha, G-CSF R, IL-6 R, IL-11 R alpha, and TCCR. OSM R beta does not bind cytokines directly, but increases the affinity of gp130 for OSM, and GPL for IL-31 (7, 8). OSM R beta, gp130, and GPL each initiate signaling events following ligand stimulation (9, 10). Jak/STAT and MAPK pathways are activated by OSM R beta -containing receptors (9, 11, 12, 13), including STAT5b and SHC which are not activated by other IL-6 family receptors (10, 13). In mice, the loss of OSM R beta expression blocks erythroid progenitor development in bone marrow, and dramatically reduces the number of circulating platelets and erythrocytes (14). The type II OSM receptor is the only IL-6 family receptor that promotes osteoblast differentiation in calvaria cell cultures (15).
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- Diveu, C. et al. (2004) Eur. Cytokine Netw. 15:291.
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- Tanaka, M. et al. (2003) Blood 102:3154.
- Malaval, L. et al. (2005) J. Cell. Physiol. 204:585.
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Tried with various conditions on cells lysates without success by Western blot. However, when I tried an OSMR antibody from a different company on the same samples alongside, that worked no problem. The antibody was only tried for Western blot.
