Human Endoglin / CD105 HEK293 Overexpression Lysate: Product Information
This Human Endoglin / CD105 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Endoglin / CD105 protein (Cat: 10149-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the extracellular domain of human CD105 (NP_001108225.1) (Met 1-Gly 586) was expressed, with C-terminal fused polyhistidine tag.
The recombinant human CD105 consists of 572 amino acids after removal of the signal peptide and predicts a molecular mass of 62.3 kDa. As a result of glycosylation, rh CD105 migrates as an approximately 80-90 kDa protein in SDS-PAGE under reducing conditions.
Human Endoglin / CD105 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 Endoglin / CD105 HEK293 Overexpression Lysate: Alternative Names
Human END Overexpression Lysate; Human HHT1 Overexpression Lysate; Human ORW1 Overexpression Lysate
Endoglin / CD105 Background Information
Endoglin, also known as CD15, is a type I homodimeric transmembrane glycoprotein with a large, disulfide-linked, extracellular region and a short, constitutively phosphorylated cytoplasmic tail. Endoglin contains an RGD tripeptide which is a key recognition structure in cellular adhesion,,suggesting a critical role for endoglin in the binding of endothelial cells to integrins and/or other RGD receptors. Endoglin is highly expressed on vascular endothelial cells, chondrocytes, and syncytiotrophoblasts of term placenta. It is also found on activated monocytes, mesenchymal stem cells and leukemic cells of lymphoid and myeloid lineages. As an accessory receptor for the TGF-β superfamily ligands, endoglin binds TGF-β1 and TGF-β3 with high affinity not by itself but by associating with TGF-β type II receptor (TβRII) and activates the downstream signal pathways. In addition, in human umbilical vein endothelial cells, ALK-1 is also a receptor kinase for endoglin threonine phosphorylation, and mutations in either of the two genes result in the autosomal-dominant vascular dysplasia, hereditary hemorrhagic telangiectasia (HHT). Endoglin has been regarded as a powerful biomarker of neovascularization, and is associated with several solid tumor types.
Bellon T., et al.,(1993), Identification and expression of two forms of the human transforming growth factor-beta-binding protein endoglin with distinct cytoplasmic regions. Eur. J. Immunol. 23:2340-2345.
Humphray S.J., et al., (2004), DNA sequence and analysis of human chromosome 9.Nature 429:369-374.
Gougos A., et al.,(1990), Primary structure of endoglin, an RGD-containing glycoprotein of human endothelial cells.J. Biol. Chem. 265:8361-8364.
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