CD31/PECAM-1 Antibody (MEM-05)

Product Discontinued

CD31/PECAM-1 Antibody (MEM-05) Summary

• Immunogen: Tissue / cell preparation (Human). (Leucocytes of patient suffering from LGL-type leukaemia).
• Specificity: This reacts with CD31 antigen.
• Isotype: IgG1
• Clonality: Monoclonal
• Host: Mouse
• Gene: PECAM1
• Purity: Protein A purified

Applications/Dilutions

• Dilutions:
  • CyTOF-ready
  • Flow Cytometry 1-4 ug/ml
  • Immunocytochemistry/ Immunofluorescence
  • Immunohistochemistry
  • Immunohistochemistry-Paraffin
  • Western Blot 1:1000
• Application Notes: Flow Cytometry Use at an assay dependent concentration. WB: Use at an assay dependent dilution. Use under non-reducing conditions. Not tested in other applications. Optimal dilutions/concentrations should be determined by the end user. This antibody is CyTOF ready.
• Theoretical MW: 140 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Store at 4C. Do not freeze.
• Buffer: Phosphate buffered saline (PBS), pH 7.4
• Preservative: 15mM Sodium Azide
• Concentration: 1 mg/ml
• Purity: Protein A purified

Alternate Names for CD31/PECAM-1 Antibody (MEM-05)

• adhesion molecule
• CD31 antigen
• CD31
• CD31/EndoCAM
• EndoCAM
• FLJ34100
• FLJ58394
• GPIIA'
• PECA1
• PECAM1
• PECAM-1
• PECAM-1, CD31/EndoCAM
• platelet endothelial cell adhesion molecule
• platelet endothelial cell adhesion molecule-1
• platelet/endothelial cell adhesion molecule

Background

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

Limitations

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.

Bioinformatics

• Gene Symbol: PECAM1