KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
additional information | - |
additional information | kinetic analysis is performed for human CE-1-catalyzed cocaine hydrolysis, Michalis-Menten kinetics, thermodynamics, overview | Homo sapiens |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
cocaine + H2O | Homo sapiens | CE-1 is responsible for the methyl ester hydrolysis of cocaine | O-benzoylecgonine + methanol | - |
? | |
additional information | Homo sapiens | in comparison with the (-)-cocaine hydrolysis (benzoyl ester) in vivo, the faster (-)-cocaine hydrolysis (methyl ester) in vivo is solely due to the high abundance of CE-1 in the body | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Homo sapiens | P23141 | - |
- |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
a carboxylic ester + H2O = an alcohol + a carboxylate | catalytic mechanism for hydrolysis occurring at the methyl ester group in CE-1-cocaine, quantum mechanical/molecular mechanical (QM/MM) reaction-coordinate calculations, overview | Homo sapiens |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.00097 | - |
substrate cocaine, pH 7.4, temperature not specified in the publication | Homo sapiens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
(-)-cocaine + H2O | CE-1 catalyzed hydrolysis of (-)-cocaine, reaction mechanism of cocaine hydrolysis catalyzed by CE-1, overview. Two reaction steps: a single-step acylation process and a single-step deacylation process. In the transition states of both single-step processes, the cocaine NH group joins the oxyanion hole to form an additional hydrogen bond with the negatively charged carbonyl oxygen atom of the cocaine. The transition states are stabilized by both intermolecular and intramolecular hydrogen bonds with the methyl ester of cocaine, specifically the carbonyl oxygen atom. The rate-limiting transition state is associated with the acylation process | Homo sapiens | O-benzoylecgonine + methanol | - |
? | |
cocaine + H2O | CE-1 is responsible for the methyl ester hydrolysis of cocaine | Homo sapiens | O-benzoylecgonine + methanol | - |
? | |
additional information | in comparison with the (-)-cocaine hydrolysis (benzoyl ester) in vivo, the faster (-)-cocaine hydrolysis (methyl ester) in vivo is solely due to the high abundance of CE-1 in the body | Homo sapiens | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
carboxylesterase-1 | - |
Homo sapiens |
CE-1 | - |
Homo sapiens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.4 | - |
assay at | Homo sapiens |
General Information | Comment | Organism |
---|---|---|
physiological function | carboxylesterase-1 (CE-1) is a crucial enzyme responsible for metabolism/activation/inactivation of xenobiotics (therapeutic agents, prodrugs, abused drugs, and organophosphorus nerve agents etc.) and also involved in many other biological processes. CE-1 is responsible for the methyl ester hydrolysis of cocaine | Homo sapiens |