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- Regulatory Status
- RUO
- Other Names
- Glycoprotein NMB, GPNMB, HGFIN, HGFINglycoprotein nmb-likeprotein, NMBosteoactivin, transmembrane glycoprotein NMB, Osteoactivin, Transmembrane glycoprotein HGFIN, DC-HIL, glycoprotein (transmembrane) nmb, PLCA3
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- Product Citations
- publications
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Stability Testing for Recombinant Human GPNMB. One aliquot (Control) was stored at 4°C for 7 days, while another aliquot (4XF/T) was subjected to multiple freeze-thaw cycles by freezing at -80°C and thawing four times over a 7-day period. Each freeze-thaw cycle involved placing the sample on ice and slowly thawing it until no ice crystals remained in the tube. A minimum of 24 hours elapsed between each freeze and thaw event. Following treatment, the reduced samples (4 µg/lane) were separated by SDS-PAGE and stained with Coomassie brilliant blue dye. Lane M: Protein ladder (Cat. No. 773302).
| Cat # | Size | Price | Quantity Check Availability | Save | ||
|---|---|---|---|---|---|---|
| 569006 | 100 µg | 300 CHF | ||||
GPNMB, also known as osteoactivin, is a type I transmembrane glycoprotein and involved in various cellular functions, including cell migration, proliferation, invasion, adhesion, and differentiation. GPNMB regulates differentiation and activities of both osteoblasts and osteoclasts in bone development and plays a key role in the pathogenesis of autoimmune disease, neurodegenerative diseases, and various malignancies. GPNMB is also expressed in certain cancers including melanoma, glioma, breast cancer cells. In addition, GPNMB expression has been detected in dendritic cells, melanocytes, and a variety of tissues within skin, heart muscle, lung, lymph node, breast, and colon. Notably, GPNMB expressed in macrophages negatively regulates inflammation. The release of a soluble GPNMB fragment, cleaved by the metalloproteinase ADAM10, releases a cascade of interactions with various molecular partners. These interactions include tyrosine kinase receptors, integrins, and heparan sulfate proteoglycans. GPNMB's influence on adaptive immunity is mediated through its interaction with heparan sulfate proteoglycan syndecan-4. In the context of tumor biology, GPNMB binds to α5β1 fibronectin receptors, promoting tumor invasion and metastasis. GPNMB can be stimulated by various cytokines and growth factors, including granulocyte-macrophage-colony stimulating factors, Transforming growth factor-β, Interleukin-10, and interferon-γ.
Product DetailsProduct Details
- Source
- Human GPNMB, amino acids (Ala22-Asn498) (Accession# Q14956-1) with a C-terminal 10His tag, was expressed in HEK 293 cells
- Molecular Mass
- The 497 amino acid recombinant protein has a predicted molecular mass of approximately 55.8 kD. The DTT-reduced and non-reduced protein migrates at approximately 70-115 by SDS-PAGE.
- Purity
- > 85% as determined by Coomassie stained SDS-PAGE.
- Formulation
- Protein is formulated in 20 mM HEPES, 200 mM NaCl, 5% glycerol, pH 7.5
- Concentration
- 100 µg size at 0.5 mg/mL
- Storage & Handling
- Unopened vial can be stored between 2°C and 8°C for up to 1 week, at -20°C for up to three months, or at -70°C or colder until the expiration date. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C or colder. Stock solutions can also be prepared at 50 - 100 µg/mL in appropriate sterile buffer, carrier protein such as 0.2 - 1% BSA or HSA can be added when preparing the stock solution. Aliquots can be stored between 2°C and 8°C for up to one week and stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles.
- Application
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Standard
- Application Notes
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BioLegend carrier-free recombinant proteins provided in liquid format are shipped with dry ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are validated in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at tech@biolegend.com.
Antigen Details
- Structure
- Monomer
- Distribution
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Broadly distributed in normal adult tissues including skin, heart muscle, lung, lymph node, breast, and colon
- Function
- GPNMB regulates the differentiation and activities of both osteoblasts and osteoclasts
- Interaction
- Cancer cells, T cells
- Ligand/Receptor
- CD44, Syndecan-4, epidermal growth factor receptor, vascular endothelial growth factor receptor
- Cell Type
- Dendritic cells, Epithelial cells, Macrophages, Osteoblasts, Osteoclasts, T cells
- Biology Area
- Adaptive Immunity, Angiogenesis, Cell Adhesion, Cell Motility/Cytoskeleton/Structure, Cell Proliferation and Viability, Immuno-Oncology, Immunology, Innate Immunity, Neurodegeneration, Neuroinflammation, Neuroscience
- Molecular Family
- Innate Immune Signaling
- Antigen References
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- Ripoll VM, et al. 2007. J Immunol. 178:6557-66.
- Abdelmagid SM, et al. 2007. J Cell Physiol. 210:26-37.
- Kumagai K, et al. 2023. Front Cell Dev Biol. 11:1242152.
- Frara N, et al. 2016. J Cell Physiol. 231:72-83.
- Abdelmagid SM, et al. 2015. J Biol Chem. 290:20128-46.
- Tsou PS, et al. 2020. FASEB J. 34:8810-8823.
- Ren N, et al. 2016. J Cell Physiol. 231:72.
- Lazaratos AM, et al. 2022. Oncogene. 41:4573-4590.
- Gene ID
- 10457 View all products for this Gene ID
- UniProt
- View information about GPNMB on UniProt.org
Related Pages & Pathways
Pathways
Related FAQs
- Why choose BioLegend recombinant proteins?
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• Each lot of product is quality-tested for bioactivity as indicated on the data sheet.
• Greater than 95% Purity or higher, tested on every lot of product.
• 100% Satisfaction Guarantee for quality performance, stability, and consistency.
• Ready-to-use liquid format saves time and reduces challenges associated with reconstitution.
• Bulk and customization available. Contact us.
• Learn more about our Recombinant Proteins. - How does the activity of your recombinant proteins compare to competitors?
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We quality control each and every lot of recombinant protein. Not only do we check its bioactivity, but we also compare it against other commercially available recombinant proteins. We make sure each recombinant protein’s activity is at least as good as or better than the competition’s. In order to provide you with the best possible product, we ensure that our testing process is rigorous and thorough. If you’re curious and eager to make the switch to BioLegend recombinants, contact your sales representative today!
- What is the specific activity or ED50 of my recombinant protein?
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The specific activity range of the protein is indicated on the product datasheets. Because the exact activity values on a per unit basis can largely fluctuate depending on a number of factors, including the nature of the assay, cell density, age of cells/passage number, culture media used, and end user technique, the specific activity is best defined as a range and we guarantee the specific activity of all our lots will be within the range indicated on the datasheet. Please note this only applies to recombinants labeled for use in bioassays. ELISA standard recombinant proteins are not recommended for bioassay usage as they are not tested for these applications.
- Have your recombinants been tested for stability?
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Our testing shows that the recombinant proteins are able to withstand room temperature for a week without losing activity. In addition the recombinant proteins were also found to withstand four cycles of freeze and thaw without losing activity.
- Does specific activity of a recombinant protein vary between lots?
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Specific activity will vary for each lot and for the type of experiment that is done to validate it, but all passed lots will have activity within the established ED50 range for the product and we guarantee that our products will have lot-to-lot consistency. Please conduct an experiment-specific validation to find the optimal ED50 for your system.
- How do you convert activity as an ED50 in ng/ml to a specific activity in Units/mg?
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Use formula Specific activity (Units/mg) = 10^6/ ED50 (ng/mL)
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