Mouse Thrombopoietin HEK293 Overexpression Lysate: Product Information
This Mouse Thrombopoietin overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Thrombopoietin protein (Cat: 50146-M08H) from the overexpression lysate was verified.
A DNA sequence encoding the mouse THPO (NP_033405.1) precursor (Met 1-Thr 356) with a N-terminal polyhistidine tag was expressed.
The recombinant mouse THPO consists of 346 amino acids with the predicted molecular mass of 37 kDa. As a result of glycosylation, rmTHPO migrates as an approximately 80-90 kDa band 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.
Thrombopoietin (TPO or THPO), also known as myeloproliferative leukemia virus ligand (c-Mpl), is a hematopoietic growth factor belonging to the EPO/TPO family. The thrombopoietin protein is produced mainly by the liver and the kidney that regulates the production of platelets by the bone marrow. Thrombopoietin protein stimulates both proliferation of progenitor megakaryocytes and their maturation to platelet-producing megakaryocytes, and also accelerates the recovery of platelets. Thrombopoietin protein is involved in cardiovascular disease as it regulates megakaryocyte development and enhances platelet adhesion/aggregation. It has been identified that surface c-MPL, the receptor for thrombopoietin protein, binds to the ligand and mediates the action.
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