EC Number | Application | Comment | Organism |
---|---|---|---|
3.1.1.84 | medicine | cocaine esterase is used to accelerate the removal of systemic cocaine and to prevent cocaine-induced lethality | Rhodococcus sp. |
EC Number | Cloned (Comment) | Organism |
---|---|---|
3.1.1.84 | expressed in Escherichia coli BL-21 Gold (DE3) cells | Rhodococcus sp. |
EC Number | Protein Variants | Comment | Organism |
---|---|---|---|
3.1.1.84 | G173Q | the mutant does not have any deleterious effects on the catalytic efficiency | Rhodococcus sp. |
3.1.1.84 | L169K | the mutation significantly increases the stability of cocaine esterase over that of wild type enzyme (half-life at 37°C is 570 min). The mutant exhibits about 8fold increase in Km for cocaine compared to the wild type enzyme | Rhodococcus sp. |
3.1.1.84 | T172R | the mutants shows about wild type thermal stability and decreased catalytic efficiency for cocaine | Rhodococcus sp. |
3.1.1.84 | T172R/G173Q | the mutation extends half-life at 37°C up to 370 min (30fold improvement compared to the wild type stability) and leads to about 3fold decrease of catalytic efficiency for cocaine | Rhodococcus sp. |
3.1.1.84 | T172R/G173Q/L169K | the mutant shows poor enzyme kinetics and does not display enhanced stabilization | Rhodococcus sp. |
EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
3.1.1.84 | 0.0037 | - |
cocaine | mutant enzyme G173Q, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 0.0057 | - |
cocaine | wild type enzyme, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 0.017 | - |
cocaine | mutant enzyme T172R, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 0.017 | - |
cocaine | mutant enzyme T172R/G13Q, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 0.044 | - |
cocaine | mutant enzyme L169K, at pH 7.4 and 37°C | Rhodococcus sp. |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
3.1.1.84 | Rhodococcus sp. | Q9L9D7 | - |
- |
3.1.1.84 | Rhodococcus sp. MB1 | Q9L9D7 | - |
- |
EC Number | Purification (Comment) | Organism |
---|---|---|
3.1.1.84 | Talon metal chelate affinity column chromatography and Q-Sepharose column chromatography | Rhodococcus sp. |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
3.1.1.84 | cocaine + H2O | - |
Rhodococcus sp. | ecgonine methyl ester + benzoate | - |
? | |
3.1.1.84 | cocaine + H2O | - |
Rhodococcus sp. MB1 | ecgonine methyl ester + benzoate | - |
? |
EC Number | Synonyms | Comment | Organism |
---|---|---|---|
3.1.1.84 | cocE | - |
Rhodococcus sp. |
EC Number | Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|---|
3.1.1.84 | 37 | - |
the wild type enzyme has a half-life of 12.2 min at 37°C | Rhodococcus sp. |
EC Number | Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
3.1.1.84 | 36.1 | - |
cocaine | mutant enzyme G173Q, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 50.9 | - |
cocaine | mutant enzyme T172R, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 51.4 | - |
cocaine | wild type enzyme, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 53.4 | - |
cocaine | mutant enzyme T172R/G13Q, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 80.1 | - |
cocaine | mutant enzyme L169K, at pH 7.4 and 37°C | Rhodococcus sp. |
EC Number | kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
3.1.1.84 | 1840 | - |
cocaine | mutant enzyme L169K, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 3060 | - |
cocaine | mutant enzyme T172R, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 3180 | - |
cocaine | mutant enzyme T172R/G13Q, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 8990 | - |
cocaine | wild type enzyme, at pH 7.4 and 37°C | Rhodococcus sp. | |
3.1.1.84 | 9880 | - |
cocaine | mutant enzyme G173Q, at pH 7.4 and 37°C | Rhodococcus sp. |