Human BAMBI HEK293 Overexpression Lysate: Product Information
This Human BAMBI overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of BAMBI protein (Cat: 10890-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the human BAMBI extracellular domain (NP_036474.1) (Met 1-Ala 152) was expressed, fused with a C-terminal polyhistidine tag.
The secreted recombinant human BAMBI comprises 143 amino acids with a predicted molecular mass of 16.1 kDa. As a result of different glycosylation, the apparent molecular mass of rh BAMBI is approximately 16-23 kDa in SDS-PAGE under reducing conditions.
Human BAMBI 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 BAMBI HEK293 Overexpression Lysate: Alternative Names
Human NMA Overexpression Lysate
BAMBI Background Information
BMP and activin membrane-bound inhibitor (BAMBI) is a transmembrane glycoprotein that is a pseudoreceptor of type 1 receptors. BAMBI structurally lacks intracellular serine/ threonine kinase domain but with an extracellular domain and a short cytoplasmic region that share sequence similarities with type 1 receptors, whose members have functions in signal transduction in various developing and pathological processes. BAMBI competes with the type 1 receptor, a receptor of the transforming growth factor-beta (TGF-beta), through functioning as negative regulators of TGF-beta by limiting the signaling range of the TGF-beta family during early embryogenesis. The expression of BAMBI can be induced by accumulated beta-catenin and BMP. The expression level of BAMBI was found aberrantly elevated in most colorectal and hepatocellular carcinomas relative to the corresponding non-cancerous tissues. It suggestes that beta-catenin and TGF-beta interfere growth arrest by inducing the expression of BAMBI, and this may contribute to colorectal and hepatocellular tumorigenesis.
BMP and activin membrane-bound inhibitor
Sekiya T, et al. (2003) Identification of BMP and Activin Membrane-bound Inhibitor (BAMBI), an Inhibitor of Transforming Growth Factor- Signaling, as a Target of the -Catenin Pathway in Colorectal Tumor Cells. The Journal of Biological Chemistry. 279:6840-6.
Shi YG, et al. (2003) Mechanisms of TGF- Signaling from Cell Membrane to the Nucleus. Cell. 113(6): 685-700.
Wanninger J, et al. (2011) Adiponectin induces the transforming growth factor decoy receptor BAMBI in human hepatocytes. FEBS Lett. 585(9):1338-44.
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