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- Regulatory Status
- RUO
- Other Names
- Secreted and transmembrane protein 1A, Protein K-12, K12, K12 protein
- Ave. Rating
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- Product Citations
- publications
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When recombinant mouse SECTM1a is immobilized at 5 µg/mL, recombinant mouse CD7 binds in a dose-dependent manner with ED50 range of 35 – 210 ng/mL. HRP anti-His Tag Antibody (Cat. No. 652504) was used to detect the binding. -
Stability Testing for Recombinant Mouse SECTM1a. Recombinant Mouse SECTM1a was aliquoted in PBS at 0.2 mg/mL. One aliquot was frozen and thawed four times (4x Freeze/Thaw), and compared to a control kept at 4°C (Control). The samples were tested in a binding assay with recombinant mouse CD7. The ED50 for this effect is 35 – 210 ng/mL.
| Cat # | Size | Price | Quantity Check Availability | Save | ||
|---|---|---|---|---|---|---|
| 799404 | 25 µg | $220 | ||||
| 799406 | 100 µg | $780 | ||||
Mouse Secreted and transmembrane protein 1a (mSECTM1a), also called Protein K-12, is a transmembrane glycoprotein. mSECTM1a shares the greatest homology to human SECTM1. The mouse genome contains two SECTM genes (SECTM1a and SECTM1b) in close proximity to the mouse CD7 gene. Mouse SECTM1a contains N-linked glycosylation motif, a transmembrane domain, and a short cytoplasmic sequence. mSECTM1a is predominantly expressed by cells of the myeloid lineage and epithelia. Similar to human SECTM1, mSECTM1 is also an alternative ligand to CD7 receptor. Both SECTM1a and SECTM1b demonstrate strong affinity and competitively bind to CD7. In addition, mSECTM1 co-stimulates T cell proliferation and IL-2 production in an CD7-independent manner. mSECTM1a activates T cell function through the binding to GITR (glucocorticoid-induced tumor necrosis factor receptor-related protein) rather than CD7. mSECTM1a is defined as a novel regulator for self-renewal of stable Tissue-resident macrophages (TRM). This results in stable TRM populations and favors homeostasis after tissue damage caused by acute inflammation. mSECTM1a may also serve as a new therapeutic agent for the treatment of inflammatory diseases.
Product DetailsProduct Details
- Source
- Mouse SECTM1a, amino acid (Gln28-Thr165) (Accession# NP_663348.2), with a linker (GSSR) and a C-terminal mouse IgG2a Fc (Glu98-Lys330) was expressed in CHO cells.
- Molecular Mass
- The 375 amino acid recombinant protein has a predicted molecular mass of approximately 42.17 kD. The DTT-reduced and non-reduced proteins migrate at 55 -75 kD and 100 – 140 kD by SDS-PAGE, respectively. The predicted N-terminal amino acid is Gln.
- Purity
- > 95%, as determined by Coomassie stained SDS-PAGE.
- Formulation
- 0.22 µm filtered protein solution is in PBS.
- Endotoxin Level
- Less than 0.1 EU per µg cytokine as determined by the LAL method.
- Concentration
- 25 µg size is bottled at 200 µg/mL. 100 µg size and larger sizes are lot-specific and bottled at the concentration indicated on the vial. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.
- Storage & Handling
- Unopened vial can be stored between 2°C and 8°C for up to 2 weeks, at -20°C for up to six 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.
- Activity
- When recombinant mouse SECTM1a is immobilized at 5 µg/mL, recombinant mouse CD7 binds in a dose-dependent manner with ED50 range of 35 – 210 ng/mL. HRP anti-His Tag Antibody (Cat. No. 652504) was used to detect the binding.
- Application
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Bioassay
- Application Notes
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BioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue-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
- Dimer
- Distribution
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SECTM1a is predominantly expressed by cells of the myeloid lineage and epithelia.
- Function
- Costimulatory ligand for T cell proliferation, increases monocyte migration, enhances self-renewal of tissue-resident macrophages (TRM) and stable TRM populations
- Interaction
- Mouse SECTM1 binds to both human T and NK cells
- Ligand/Receptor
- CD7, GITR
- Bioactivity
- Recombinant mouse CD7 binds to immobilized recombinant mouse SECTM1 in a dose-dependent manner
- Cell Type
- Endothelial cells, Granulocytes, Leukocytes, NK cells, T cells
- Biology Area
- Cell Adhesion, Cell Biology, Cell Proliferation and Viability, Immunology, Signal Transduction
- Molecular Family
- Adhesion Molecules
- Antigen References
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- Lam GK, et al. 2005. J Clin Immunol. 25: 41-9.
- Lyman SD, et al. 2000. J Biol Chem.275:3431-7.
- Mu X, et al. 2021. Mol Ther. 29:1294-1311.
- Slentz-Kesler KA, et al. 1998. Genomics. 47:327-40.
- Stillwell R and Bierer BE. 2001. Immunol Res. 24:31-52.
- Wang T, et al. 2014. J Invest Dermatol. 134:1108-1118.
- Wang T, et al. 2012. J Leukoc Biol. 91:449-59.
- Howie D, et al. 2013. PLoS One. 8:e73610.
- Gene ID
- 209588 View all products for this Gene ID
- UniProt
- View information about SECTM1a on UniProt.org
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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