CD31/PECAM-1 Protein, Human

CD31/PECAM-1 Protein, a pivotal cell adhesion molecule, is essential for leukocyte transendothelial migration (TEM) in most inflammatory conditions. PECAM1 modulates bradykinin receptor BDKRB2 activation and regulates bradykinin- and hyperosmotic shock-induced ERK1/2 activation in endothelial cells. Signaling through PECAM-1 leads to the activation of neutrophils, monocytes and leukocytes. CD31/PECAM-1 Protein, Human is the recombinant human-derived CD31/PECAM-1 protein, expressed by HEK293 , with tag free. The total length of CD31/PECAM-1 Protein, Human is 574 a.a., with molecular weight of ~115 kDa.

CD31/PECAM-1, a pivotal cell adhesion molecule, is essential for leukocyte transendothelial migration (TEM) in most inflammatory conditions. The critical role of Tyr-679 in TEM is underscored by its requirement for efficient trafficking of PECAM-1 to and from the lateral border recycling compartment (LBRC), crucial for targeting the LBRC membrane around migrating leukocytes. The trans-homophilic interaction potentially contributes to endothelial cell-cell adhesion via cell junctions. Homophilic ligation of PECAM-1 serves a dual purpose, preventing macrophage-mediated phagocytosis of neighboring viable leukocytes by transmitting a detachment signal, while promoting the macrophage-mediated phagocytosis of apoptotic leukocytes by tethering them to phagocytic cells. Notably, PECAM-1 modulates bradykinin receptor BDKRB2 activation and regulates bradykinin- and hyperosmotic shock-induced ERK1/2 activation in endothelial cells. Its interaction with various partners, including BDKRB2, GNAQ, PTPN11, FER, and CD177, further elucidates the intricate molecular mechanisms governing its diverse cellular functions, while its trans-homodimerization is crucial for effective cell-cell interaction^{[1][2][3][4][5]}.

Measured by its ability of the immobilized protein to support the adhesion of Jurkat human acute T cell leukemia cells. When 5×10⁴ cells/well are added to rhCD31 coated plates (3.3 μg/mL,100 μL/well) in the presence of 20 ng/mL PMA, approximately 80.4% will adhere after 30 minutes at 37°C.

Human

HEK293

Tag Free

EAW94208.1 (Q28-K601)

5175  [NCBI]

QENSFTINSVDMKSLPDWTVQNGKNLTLQCFADVSTTSHVKPQHQMLFYKDDVLFYNISSMKSTESYFIPEVRIYDSGTYKCTVIVNNKEKTTAEYQVLVEGVPSPRVTLDKKEAIQGGIVRVNCSVPEEKAPIHFTIEKLELNEKMVKLKREKNSRDQNFVILEFPVEEQDRVLSFRCQARIISGIHMQTSESTKSELVTVTESFSTPKFHISPTGMIMEGAQLHIKCTIQVTHLAQEFPEIIIQKDKAIVAHNRHGNKAVYSVMAMVEHSGNYTCKVESSRISKVSSIVVNITELFSKPELESSFTHLDQGERLNLSCSIPGAPPANFTIQKEDTIVSQTQDFTKIASKSDSGTYICTAGIDKVVKKSNTVQIVVCEMLSQPRISYDAQFEVIKGQTIEVRCESISGTLPISYQLLKTSKVLENSTKNSNDPAVFKDNPTEDVEYQCVADNCHSHAKMLSEVLRVKVIAPVDEVQISILSSKVVESGEDIVLQCAVNEGSGPITYKFYREKEGKPFYQMTSNATQAFWTKQKANKEQEGEYYCTAFNRANHASSVPRSKILTVRVILAPWKK

Approximately 115 kDa

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized from a 0.2 μm filtered solution of 50 mM Tris, 10 mM NaCl, pH 7.5.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.