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- Regulatory Status
- RUO
- Other Names
- Platelet endothelial cell adhesion molecule, PECAM-1, PECAM1,EndoCAM, GPIIA, PECA1, CD-31, PECAM
- Ave. Rating
- Submit a Review
- Product Citations
- publications
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When immobilize human catenin β-1 binds to recombinant human CD31 in a dose-dependent manner. The ED50 for this effect is 1.2 – 7.2 µg/mL. -
Stability Testing for recombinant human CD31: Recombinant human CD31 aliquoted in PBS, pH 7.2 at 0.2 mg/mL. One aliquot was kept at 4°C (Control), and another was frozen and thawed four times (4x Freeze/Thaw). The samples were evaluated in a binding assay with immobilized human catenin β-1 and different concentration of recombinant human CD31 that binds in a dose-dependent manner. The ED50 for this effect is 1.2 – 7.2 µg/mL.
| Cat # | Size | Price | Quantity Check Availability | Save | ||
|---|---|---|---|---|---|---|
| 717154 | 25 µg | 128€ | ||||
| 717156 | 100 µg | 221€ | ||||
Platelet endothelial cell adhesion molecule 1 (PECAM-1), also known as CD31 and EndoCAM, is a type I transmembrane protein that belongs to the immunoglobulin superfamily. PECAM-1 contains six extracellular immunoglobulin-like domains, a single transmembrane region, and a cytoplasmic tail with immunoreceptor tyrosine-based inhibitory motifs (ITIMs). PECAM-1 is broadly expressed on monocytes, platelets, granulocytes, endothelial cells, monocytes, neutrophils, macrophages, dendritic cells, and subsets of T and B lymphocytes. CD31 is a key cell adhesion molecule involved in leukocyte transendothelial migration (TEM) during inflammation. It engages in homophilic (CD31–CD31) that regulates integrin α6β1 expression to facilitate leukocyte migration. It supports both adhesion and detachment of leukocytes in immune regulation. It also mediates heterophilic interactions with molecules such as CD38, catenin β1, integrin αvβ3 and CD177, regulating immune cell adhesion, migration, and detachment. CD31 also plays crucial roles in angiogenesis, vascular integrity, and wound healing.
Product DetailsProduct Details
- Source
- Human CD31, amino acid Gln28-Lys601 (Accession# P16284.1) was expressed in CHO cells.
- Molecular Mass
- The 574 amino acid recombinant protein has a predicted molecular mass of approximately 64.47 kD. The DTT-reduced and non-reduced protein migrates at approximately 75-115 kD respectively by SDS-PAGE. 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, pH 7.2
- Endotoxin Level
- Less than 0.1 EU per µg protein 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
- Recombinant human CD31 binds to immobilized recombinant human catenin β-1 in a dose-dependent manner. The ED50 for this effect is 1.2 – 7.2 µg/mL.
- 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
- Monomer
- Distribution
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Monocytes, platelets, granulocytes, endothelial cells, monocytes/ macrophages, dendritic cells, and T and B cell subsets; plasma membrane
- Function
- PECAM-1 mediates cell adhesion, wound healing and angiogenesis.
- Interaction
- SHP2, Src kinase
- Ligand/Receptor
- PECAM-1, CD177, integrin αvβ3, CD38, catenin β-1
- Bioactivity
- Measured by its ability to binds catenin β-1
- Cell Type
- Endothelial cells, Granulocytes, Lymphocytes, Monocytes, Neutrophils, Platelets
- Biology Area
- Angiogenesis, Cell Adhesion, Cell Biology, Immunology, Neuroinflammation, Neuroscience
- Molecular Family
- Adhesion Molecules, CD Molecules
- Antigen References
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- Muller WA, et al. 1999. J Leukoc Biol. 66:698.
- Piali LP, et al. 1995. J Cell Biol. 130:451.
- Deaglio S, et al. 1998. J Immunol. 160: 395.
- Dangerfield J, et al. 2002. J Exp Med. 196:1201.
- Brown S. et al. 2002. Nature. 418:200.
- Sachs UJ, et al. 2007. J Biol Chem. 282:23603.
- DeLisser HM, et al. 1997. Am J Pathol. 151:671.
- Cao G et al. 2002. Am J Physiol Cell Physiol. 282:C1181.
- Gene ID
- 5175 View all products for this Gene ID
- UniProt
- View information about CD31 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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