Mouse carboxylesterase 2/CES2 HEK293 Overexpression Lysate: Product Information
This Mouse carboxylesterase 2/CES2 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of carboxylesterase 2/CES2 protein (Cat: 50515-M08H) from the overexpression lysate was verified.
A DNA sequence encoding the extracellular domain of mouse CES2 (NP_663578.1) (Met 1-Lys 557) was expressed, with a polyhistidine tag at the C-terminus.
The recombinant mouse CES2 consists of 542 amino acids and has a predicted molecular mass of 60.4 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rmCES2 is approximately 52 kDa.
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.
Carboxylesterase 2 (CES2) is a member of the carboxylesterase family and belongs to the multigene family. Carboxylesterase 2 is responsible for the hydrolysis of ester- and amide-bond-containing drugs such as cocaine and beroin. It also serves to hydrolyze long-chain fatty acid esters and thioesters. It is speculated that carboxylesterases may play a role in lipid metabolism and the blood-brain barrier system and together with isform 1, are a serine esterase involved in both drug metabolism and activation. Human carboxylesterase 2 is commonly expressed in tumor tissues and irinotecan, a topoisomerase I inhibitor commonly used in the treatment of many solid tumors.
Imai T. et al. (2006) Human carboxylesterase isozymes: catalytic properties and rational drug design. Drug metab pharmacokinet. 21 (3): 173-85.
Guang Xu, et al. (2002) Human carboxylesterase 2 is commonly expressed in tumor tissue and is correlated with activation of irinotecan. Clin Cancer Res. 8: 2605.
Zhang, et al. (2002) Comprehensive Evaluation of Carboxylesterase-2 Expression in Normal Human Tissues Using Tissue Array Analysis. Applied Immunohistochemistry & Molecular Morphology. 10 (4): 374-80.
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