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E0287

Sigma-Aldrich

Carboxylesterase 1 isoform b human

recombinant, expressed in baculovirus infected BTI insect cells

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Synonym(s):
Carboxylesterase 1 human, carboxylesterase, esterase
Enzyme Commission number:
3.1.1.1 (BRENDA, IUBMB)
EC Number:
232-773-7
NACRES:
NA.54

recombinant

expressed in baculovirus infected BTI insect cells

Quality Level

200

form

liquid

specific activity

≥500 units/mg protein

concentration

5 mg/mL

weight

(0.5 ml)

shipped in

dry ice

storage temp.

−70°C

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General description

Carboxylesterase (CE) belongs to serine hydrolase family. It is widely present in the human body. Five isoforms of carboxylesterase is present in humans. It is encoded by CES1 gene mapped to 16q22.2 in human chromosome.
Carboxylesterase 1 is a member of a large multigene carboxylesterase family. These enzymes are responsible for the hydrolysis of ester- and amide-bond-containing drugs such as cocaine and heroin. They also hydrolyze long-chain fatty acid esters and thioesters. This enzyme is known to hydrolyze aromatic and aliphatic esters and is necessary for cellular cholesterol esterification. It may also play a role in detoxification in the lung and/or protection of the central nervous system from ester or amide compounds.

Application

Carboxylesterase 1 isoform b human has been used in the reaction to convert Amplex red to resorufin in horse radish peroxidase and oxygen independent manner. It has also been used in the development of an emission ratiometric two-photon probe (SE1) for quantitation in situ.
Delivers high catalytic activity, ideal for robust high-throughput screening assays including drug-drug interaction studies, and pharmacokinetic studies for evaluating pro-drugs and non-CYP pathways of elimination.

Biochem/physiol Actions

Carboxylesterase (CE) is implicated in drug metabolism in liver and hepatic steatosis. Deficiency of CE in humans causes obesity, hyperlipidemia, insulin insensitivity, and cancer.

Unit Definition

One unti will hydrolyze one nanomole of 4-nitrophenyl acetate per minute at pH 7.4 at 37°C

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H334

Precautionary Statements

P261 - P284 - P501

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Non classical monocytes levels, increased by subcutaneous fat-Secretome, are associated with less Rehospitalization after heart failure admission
Eiras S, et al.
Journal of Cardiovascular Translational Research, 10(1), 16-26 (2017)
Carboxylesterase converts Amplex red to resorufin: Implications for mitochondrial H2O2 release assays
Miwa S, et al.
Free Radical Biology & Medicine, 90, 173-183 (2016)
A carboxylesterase-selective ratiometric fluorescent two-photon probe and its application to hepatocytes and liver tissues
Park SJ, et al.
Chemical Science, 7(6), 3703-3709 (2016)
Zhe-Yi Hu et al.
Analytical and bioanalytical chemistry, 405(5), 1695-1704 (2012-12-15)
Dabigatran etexilate (DABE) is an oral prodrug that is rapidly converted by esterases to dabigatran (DAB), a direct inhibitor of thrombin. To elucidate the esterase-mediated metabolic pathway of DABE, a high-performance liquid chromatography/mass spectrometry based metabolite identification and semi-quantitative estimation
Keun Na et al.
International journal of cancer, 133(2), 408-415 (2013-01-16)
Although alpha-fetoprotein (AFP) is currently the major serologic biomarker for hepatocellular carcinoma (HCC), it cannot efficiently distinguish this cancer from other forms of liver disease in early diagnosis due to its low sensitivity. The aim of this study is to
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