This Human Vinculin overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Vinculin protein (Cat: 10019-H08H) from the overexpression lysate was verified.
A DNA sequence encoding the human VCL (P18206-2) (Met 1-Gln 1066) was expressed, fused with a polyhistidine tag at the C-terminus.
The recombinant human VCL consists of 1077 amino acids and has a calculated molecular mass of 118 kDa. The apparent molecular mass of rhVCL is approximately 115 kDa in SDS-PAGE under reducing conditions.
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.
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
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 CMD1W Overexpression Lysate;Human CMH15 Overexpression Lysate;Human HEL114 Overexpression Lysate;Human MV Overexpression Lysate;Human MVCL Overexpression Lysate
Vinculin (VCL) is a cytoskeletal protein that is closely related to both cell-matrix interactions and cell-cell junctions. VCL is a membrane-cytoskeletal protein in focal adhesion plaques that is involved in linkage of integrin adhesion molecules to the actin cytoskeleton. The protein contains an acidic N-terminal domain and a basic C-terminal domain separated by a proline-rich middle segment. This protein has multi-ligand properties and has been found to interact with a number of microfilament associated proteins, such as talin, a-actinin, and paxillin, which reportedly bind to either the head or tail domains of vinculin.
Massoumi R, et al. (2001) Leukotriene D(4) affects localisation of vinculin in intestinal epithelial cells via distinct tyrosine kinase and protein kinase C controlled events. J Cell Sci. 114(10): 1925-34.Turner CE, et al. (1994) Primary sequence of paxillin contains putative SH2 and SH3 domain binding motifs and multiple LIM domains: identification of a vinculin and pp125Fak-binding region. J Cell Sci. 107 (6): 1583-91.Strasser P, et al. (1993) Variable and constant regions in the C-terminus of vinculin and metavinculin: cloning and expression of fragments in E. coli. FEBS Lett. 317: 189-194.