CD31/PECAM-1 Antibody (MEC 7.46) [Alexa Fluor® 647]

Alexa Fluor (R) products are provided under an intellectual property license from Life Technologies Corporation. The purchase of this product conveys to the buyer the non-transferable right to use the purchased product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components, or any materials made using the product or its components, in any activity to generate revenue, which may include, but is not limited to use of the product or its components: (i) in manufacturing; (ii) to provide a service, information, or data in return for payment; (iii) for therapeutic, diagnostic or prophylactic purposes; or (iv) for resale, regardless of whether they are resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5791 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@lifetech.com. This conjugate is made on demand. Actual recovery may vary from the stated volume of this product. The volume will be greater than or equal to the unit size stated on the datasheet.

Cluster of differentiation (CD31), Platelet Endothelial Cell Adhesion Molecule 1 (PECAM-1), is a 30kDa type I transmembrane glycoprotein expressed by endothelial cells, platelets, leukocytes and some lymphocytes (e.g., B and T-cell subsets). Structurally, PECAM-1 consists of six extracellular immunoglobulin-like domains which serve to support various functions including homophilic binding, maintaining high expression of PECAM-1 within endothelial intercellular junctions, and supporting endothelial cell migration (1,2). PECAM's homophilic binding underscores its role in vascular barrier integrity and leukocyte trans-endothelial movement. However, PECAM may also engage in heterophilic interactions with molecules such as glycosaminoglycans (GAG), integrin alpha 5 beta 3, CD38 in lymphocytes and CD177/PR3 in neutrophils (2).

PECAM's intracellular cytoplasmic domain consists of a sequence of 118 amino acids and contains serine and tyrosine (also referred to as immunoreceptor tyrosine-based inhibitory motifs-ITIMs) residues, which may be phosphorylated upon cellular stimulation (3). ITIMs are phosphorylated by Src-family kinases and non-Src family kinases (e.g., Csk), leading to a conformational change which supports interactions with Src homology 2 (SH2) domain containing proteins such as protein-tyrosine phosphatase, SHP-2 (1,2). Formation of SHP-2/PECAM-1 complexes induces endothelial cell migration through the dephosphorylation of focal adhesion kinase and regulation of RhoA activity (1). Signaling downstream of ITIM tyrosine phosphorylations also plays a role in PECAM's anti-apoptotic activity, a function which is independent of its interaction with SHP-2. In platelets and leukocytes, phosphorylation of PECAM's cytosolic domain is inhibitory, preventing their activation.

References

1. Lertkiatmongkol, P., Liao, D., Mei, H., Hu, Y., & Newman, P. J. (2016). Endothelial functions of PECAM-1 (CD31). Current Opinion in Hematology. https://doi.org/10.1097/MOH.0000000000000239.Endothelial

2. Privratsky, J. R., & Newman, P. J. (2014). PECAM-1: Regulator of endothelial junctional integrity. Cell and Tissue Research. https://doi.org/10.1007/s00441-013-1779-3

3. Newman, P. J., & Newman, D. K. (2003). Signal transduction pathways mediated by PECAM-1: New roles for an old molecule in platelet and vascular cell biology. Arteriosclerosis, Thrombosis, and Vascular Biology. https://doi.org/10.1161/01.ATV.0000071347.69358.D9

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Images	Ratings	Applications	Species	Date	Details
Enlarge	5 reviewed by: James Xiao	Flow	Mouse	03/14/2018	View Summary Application Flow Cytometry Sample Tested IL1R-/- KO Mouse lung Species Mouse Lot E-2-030118-AF647 Comments Comments The single cell suspension was isolated from a spleen of an IL1-R KO (knockout) mouse and stained with the CD31/PECAM-1 Antibody (MEC 7.46) [Alexa Fluor® 647] at the dilution of 1:100 for 30 minutes. Cells were analyzed by flow cytometer.
Enlarge	4 reviewed by: James Xiao	IHC-Fr	Mouse	03/02/2018	View Summary Application Immunohistochemistry-Frozen Sample Tested brain and spinal cord Species Mouse Lot E-2-030118-AF647 Comments Comments Frozen mouse lung tissues of WT B6 and IL1R--/- (knockout) mice were blocked with 1% BSA in PBS and were double stained with Alex647-conjugated CD31/PECAM-1 antiboady (MEC 7.46) and PE-conjugated F4/80 for 2 hours at the room temperature.

Array NB100-1642AF647

• CD31/PECAM-1 Antibodies
• CD31/PECAM-1 Antibody Pair
• CD31/PECAM-1 ELISA Kits
• CD31/PECAM-1 Lysate
• CD31/PECAM-1 Protein
• CD31/PECAM-1 Proteins and Enzymes
• CD31/PECAM-1 ELISAs