Human Vitronectin HEK293 Overexpression Lysate: Product Information
This Human Vitronectin overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Vitronectin protein (Cat: 10424-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the human VTN (NP_000629.3) (Met1-Leu478) was expressed with a polyhistidine tag at the C-terminus.
The recombinant human VTN consists 470 amino acids and predicts a molecular mass of 53.7 kDa.
Human Vitronectin HEK293 Overexpression Lysate: Usage Guide
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
1. Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube.
2. Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Western Blot (WB) Optimal dilutions/concentrations should be determined by the end user.
Human Vitronectin HEK293 Overexpression Lysate: Alternative Names
Human V75 Overexpression Lysate; Human Vitronectin Overexpression Lysate; Human VN Overexpression Lysate; Human VNT Overexpression Lysate
Vitronectin Background Information
Vitronectin, also known as VTN, is a member of the pexin family. It is an abundant glycoprotein found in serum the extracellular matrix and promotes cell adhesion and spreading. Vitronectin is a secreted protein and exists in either a single chain form or a cleaved, two chain form held together by a disulfide bond. Vitronectin is a plasma glycoprotein implicated as a regulator of diverse physiological process, including blood coagulation, fibrinolysis, pericellular proteolysis, complement dependent immune responses, and cell attachment and spreading. Because of its ability to bind platelet glycoproteins and mediate platelet adhesion and aggregation at sites of vascular injury, vitronectin has become an important mediator in the pathogenesis of coronary atherosclerosis. As a multifunctional protein with a multiple binding domain, Vitronectin interacts with a variety of plasma and cell proteins. Vitronectin binds multiple ligands, including the soluble vitronectin receptor. It may be an independent predictor of adverse cardiovascular outcomes following acute stenting. Accordingly, Vitronectin is suggested to be involved in hemostasis, cell migration, as well as tumor malignancy.
Ekmeki OB, et al. (2006) Vitronectin in atherosclerotic disease. Clin Chim Acta. 368(1-2): 77-83.
Derer W, et al. (2009) Vitronectin concentrations predict risk in patients undergoing coronary stenting. Circ Cardiovasc Interv. 2(1): 14-9.
Heyman L, et al. (2010) Mesothelial vitronectin stimulates migration of ovarian cancer cells. Cell Biol Int. 34(5): 493-502.
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