Reactivity | MuSpecies Glossary |
Applications | Enzyme Activity |
Format | Carrier-Free |
Details of Functionality | Measured by its ability to hydrolyze p-nitrophenylacetate. The specific activity is >35,000 pmol/min/μg, as measured under the described conditions. |
Source | Mouse myeloma cell line, NS0-derived mouse Carboxylesterase 2/CES2 protein Gln27-Lys557, with a C-terminal 10-His tag |
Accession # | |
N-terminal Sequence | No results obtained: Gln27 predicted |
Protein/Peptide Type | Recombinant Enzymes |
Gene | Ces2c |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
Endotoxin Note | <1.0 EU per 1 μg of the protein by the LAL method. |
Dilutions |
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Theoretical MW | 60 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
SDS-PAGE | 58 kDa, reducing conditions |
Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Supplied as a 0.2 μm filtered solution in Tris and NaCl. |
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Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
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Assay Procedure |
*Adjusted for Substrate Blank
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Carboxylesterase 2 is a member of a large family of carboxylesterases that are responsible for the hydrolysis of ester and amide bonds (1, 2). They have broad substrate specificity ranging from small molecule esters such as phenylester to long-chain fatty acid esters and thioesters. Carboxylesterases play a major role as determinants of pharmacokinetic behavior for most therapeutic agents containing an ester, participating in the detoxification of drugs such as cocaine and heroin in serum and liver. They can also detoxify organophosphate and carbamate analogues used in agrochemicals or chemical nerve agents, such as malathion, sarin, tabun, and VX. Carboxylesterases can also perform transesterification, a reaction important for cholesterol homeostasis. Carboxylesterase deficiency may be associated with non-Hodgkin lymphoma or B-cell lymphocytic leukemia. CES2, also known as acylcarnitine hydrolase M1, shares the serine hydrolase fold observed in other esterases (3). CES2 possesses an endoplasmic reticulum retention signal (HREL) at its C-terminus. The expressed recombinant mouse CES2 lacks this signal, resulting in its secretion.
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