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Recombinant Human P-Selectin

产品编号:P251-50

产品描述:Recombinant Human P-Selectin

反应种属:

实验方法:

标记:

规格:50ug

供应商:Leinco

价格(RMB):3300.00

订购:订购

说明书:

Recombinant Human Plasma Selectin (P-Selectin)
Purified No Carrier Protein
(SELP, CD62, CD62P, FLJ45155, Granule Membrane Protein (GMP140), GRMP, Platelet Activation-Dependent Granule to External Membrane Protein (PADGEM), PSEL)
Prod. No.: P251
Source NSO Cells
Pkg. Size: 1 mg, 50 µg
Storage: -20°C to -70°C 

Description
Background:

Plasma Selectin (P-selectin), also known CD62P and GMP-140, is a cell adhesion molecule and a member of the Selectin family. It is found in granules in endothelial cells and activated platelets. In unactivated endothelial cells, it is stored in granules Weibel-Palade bodies and α-granules in unactivated platelets (1). The P-selectin ligand, PSGL-1, plays an essential role in the initial recruitment of leukocytes to the site of injury during inflammation. During inflammation, when endothelial cells are activated by molecules such as histamine or thrombin, within minutes, P-selectin moves from an internal cell location to the endothelial cell surface. Thrombin is one trigger which can stimulate endothelial-cell release of P-selectin and recent studies suggest an additional Ca2+-independent pathway involved in the release of P-selectin (2). Acting in cooperation with L-selectin, P-selectin mediates the initial interaction of circulating leukocytes with endothelial cells that produces a characteristic “rolling” of the leukocytes on the endothelium (3). P-selectin-mediated adhesion is an important factor in the development of early atherosclerotic lesions (1).

Source
NSO Cells
Molecular Weight
The predicted molecular weight of Recombinant Human P-Selectin is Mr 106 kDa (monomer). However, the actual molecular weight as observed by migration on SDS Page is Mr 146-160 kDa under reducing conditions.
State of Matter
Lyophilized
Formulation
This recombinant protein was lyophilized from a 0.2 μm filtered solution in Tris-Citrate.
Purity
>95% by SDS-PAGE and analyzed by silver stain.
Storage and Stability
This lyophilized protein is stable for six to twelve months when stored desiccated at -20°C to -70°C. After aseptic reconstitution, this protein may be stored at 2°C to 8°C for one month or at -20°C to -70°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles. See Product Insert for exact lot specific storage instructions.
Endotoxin
<1.0 EU/µg as determined by the LAL method
Biological Activity
Measured by its ability to bind P-Selectin ligands on U937 cells. P-Selectin/Fc immobilized at 10 μg/ml will induce greater than 50% adhesion on U937 cells (100 μl/well at 1 x 106 cells/ml).
Each investigator should determine their own optimal working dilution for specific applications.
Amino Acid Sequence

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References
1. Wagner, D. D. et al. (1997) J. Clin. Invest. 99:1037
2. Cleator, J. H. et al. (2006) Blood 107:2736
3. Von Andrian, U. H. et al. (1991) Proc. Natl. Acad. Sci. (USA) 88:7538
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