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CD31 (Platelet Endothelial Cell Adhesion Molecule, PECAM-1, Pecam1, Pecam)

Cat no: C2383-23F

CD31 (Platelet Endothelial Cell Adhesion Molecule, PECAM-1, Pecam1, Pecam)

PECAM-1 is a 130kD type I transmembrane glycoprotein adhesion molecule in the immunoglobulin superfamily. Expression is restricted to cells involved in circulation, especially endothelial cells, platelets, monocytes, neutrophils and lymphocyte subsets. CD31 is concentrated at cell-cell junctions and is required for transendothelial migration (TEM). The extracellular domain of CD31 has ten potential N-linked glycosylation sites and six C2-type Ig-like domains, the first of which is critical for adhesion and extravasation. The cytoplasmic domain contains immunoregulatory tyrosine-based inhibitory and switch motifs (ITIM, ITSM) that mediate both inhibition and activation via phosphotyrosine-mediated engagement of SH2-containing signaling molecules. Metalloproteinase-mediated ectodomain shedding occurs during apoptosis but increased serum CD31 ectodomain in HIV and active multiple sclerosis occurs independent of apoptosis. In humans, expression of six isoforms with exon deletions in the cytoplasmic domain is tissue- and stage-specific, but full-length CD31 is predominant. A form lacking the ITSM predominates in mouse. Mouse CD31 ECD shows 77%, 63%, 63%, 63% and 61% identity with rat, human, canine, porcine and bovine CD31, respectively. CD31 participates with other adhesion molecules in some functions, but is the critical molecule for TEM. Homotypic CD31 adhesion in trans, combined with cycling of CD31 to and from surface-connected endothelial cell vesicles, leads leukocytes across endothelial tight junctions. Homotypic adhesion and signaling functions also strongly suppress mitochondria-dependent apoptosis. In platelets, CD31 is necessary for limiting thrombus formation and promoting integrin-mediated clot retraction and platelet spreading, but mechanisms for these phenomena are unclear. CD31-/-mice are deficient in chemokine-mediated chemotaxis.\n\nApplications:\nSuitable for use in Flow Cytometry. Other applications not tested.\n\nRecommended Dilution:\nFlow Cytometry: 2.5ug labels 10e6 cells\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nLyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile PBS. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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SPECIFICATIONS

Catalog Number

C2383-23F

Size

100ug

Applications

FC

Hosts

Rat

Reactivities

Mouse

Form

Supplied as a lyophilized powder in PBS, trehalose. Reconstitute with sterile PBS to 0.5mg/ml.

P Type

Mab

Purity

Purified by Protein A/G affinity chromatography.

Isotype

IgG1

References

1. Ilan, N. and J.A. Madri (2003) Curr. Opin. Cell Biol. 15:515. 2. Xie, Y. and Muller, W.A. (1993) Proc. Natl. Acad. Sci. USA 90:5569. 3. Liao, F. et al. (1997) J. Exp. Med. 185:1349. 4. Nakada, M.T. et al. (2000) J. Immunol. 164:452. 5. Chemnitz, J.M. et al. (2004) J. Immunol. 173:945. 6. Ilan, N. et al. (2001) FASEB J. 15:362. 7. Eugenin, E.A. et al. (2006) J. Leukoc. Biol. 79:444. 8. Losy, J. et al. (1999) J. Neuroimmunol. 99:169. 9. Wang, Y. et al. (2003) Am. J. Physiol. Heart Circ. Physiol. 284:H1008.10. Mamdouh, Z. et al. (2003) Nature 421:748. 11. Gao, C. et al. (2003) Blood 102:169. 12. Falati, S. et al. (2006) Blood 107:535. 13. Wee, J.L. and D.E. Jackson (2005) Blood 106:3816. 14. Wu, Y. et al. (2005) J. Immunol. 175:3484.

Additional Info

Recognizes mouse CD31. Does not react with recombinant mouse DCC, rmICAM-1,-2,-5, rmMAdCAM-1, rmVCAM-1, recombinant porcine CD31/PECAM-1, recombinant human CD31, rhCEACAM-1, rhSIGIRR, rhICAM-3, or rhICAM-4.

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