Mouse Osteoactivin/GPNMB Antibody

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Mouse Osteoactivin/GPNMB Antibody Summary

Species Reactivity
Detects mouse Osteoactivin/GPNMB in direct ELISAs and Western blots. In direct ELISAs and Western blots, this antibody does not cross-react with recombinant human Osteoactivin.
Monoclonal Rat IgG2B Clone # 297310
Protein A or G purified from hybridoma culture supernatant
Mouse myeloma cell line NS0-derived recombinant mouse Osteoactivin/GPNMB
Accession # NP_444340
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
1 µg/mL
Recombinant Mouse Osteoactivin/GPNMB Fc Chimera (Catalog # 2330-AC)

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

Reconstitute at 0.5 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 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: Osteoactivin/GPNMB

Osteoactivin (also named GPNMB and DC-HIL) is a 125 kDa, intracellular glycoprotein that is associated with cell endosomal/lysosomal compartments (1, 2). Mouse osteoactivin is synthesized as a type I, transmembrane, 574 amino acid (aa) precursor that contains a 22 aa signal sequence, a 478 aa luminal/extracellular domain, a 23 aa transmembrane segment and a 51 aa cytoplasmic tail. The luminal region contains an N-terminal heparin-binding motif, multiple glycosylation sites, an RGD motif and a 130 aa PKD domain. The intracellular tail also has an RGD motif, plus an ITAM (Y-x-x-I) and lysosomal targeting (L-L) motif. The extracellular/luminal region is 89% and 74% aa identical to the equivalent regions in rat and human, respectively. Cells known to express osteoactivin include osteoblasts, dendritic cells, and melanocytes, plus fetal chondrocytes and stratum basale keratinocytes (2, 3). Osteoactivin is reported to bind to heparan sulfate-proteoglycan, possibly on the surface of fibroblasts and endothelial cells (2). It may also interact with integrins.

  1. Bachner, D. et al. (2002) Gene Exp. Patterns 1:159.
  2. Shikano, S. et al. (2001) J. Biol. Chem. 276:8125.
  3. Owen, T.A. et al. (2003) Crit. Rev. Eukaryot. Gene Expr. 13:205.
Long Name
Glycoprotein Non-Metastatic Melanoma Protein B
Entrez Gene IDs
10457 (Human); 93695 (Mouse); 113955 (Rat); 102133517 (Cynomolgus Monkey)
Alternate Names
DC-HIL; glycoprotein (transmembrane) nmb; glycoprotein NMB; GPNMB; HGFIN; HGFINglycoprotein nmb-like protein; NMBosteoactivin; Osteoactivin; Transmembrane glycoprotein HGFIN; transmembrane glycoprotein NMB

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