| IED ID | IndEnz0010000720 |
| Enzyme Type ID | esterase000720 |
| Protein Name |
Cocaine esterase EC 3.1.1.84 |
| Gene Name | cocE |
| Organism | Rhodococcus sp. (strain MB1 Bresler) |
| Taxonomic Lineage | cellular organisms Bacteria Terrabacteria group Actinobacteria Actinomycetia (high G+C Gram-positive bacteria) Corynebacteriales Nocardiaceae Rhodococcus unclassified Rhodococcus Rhodococcus sp. (strain MB1 Bresler) |
| Enzyme Sequence | MVDGNYSVASNVMVPMRDGVRLAVDLYRPDADGPVPVLLVRNPYDKFDVFAWSTQSTNWLEFVRDGYAVVIQDTRGLFASEGEFVPHVDDEADAEDTLSWILEQAWCDGNVGMFGVSYLGVTQWQAAVSGVGGLKAIAPSMASADLYRAPWYGPGGALSVEALLGWSALIGTGLITSRSDARPEDAADFVQLAAILNDVAGAASVTPLAEQPLLGRLIPWVIDQVVDHPDNDESWQSISLFERLGGLATPALITAGWYDGFVGESLRTFVAVKDNADARLVVGPWSHSNLTGRNADRKFGIAATYPIQEATTMHKAFFDRHLRGETDALAGVPKVRLFVMGIDEWRDETDWPLPDTAYTPFYLGGSGAANTSTGGGTLSTSISGTESADTYLYDPADPVPSLGGTLLFHNGDNGPADQRPIHDRDDVLCYSTEVLTDPVEVTGTVSARLFVSSSAVDTDFTAKLVDVFPDGRAIALCDGIVRMRYRETLVNPTLIEAGEIYEVAIDMLATSNVFLPGHRIMVQVSSSNFPKYDRNSNTGGVIAREQLEEMCTAVNRIHRGPEHPSHIVLPIIKR |
| Enzyme Length | 574 |
| Uniprot Accession Number | Q9L9D7 |
| Absorption | |
| Active Site | ACT_SITE 117; /note=Acyl-ester intermediate; /evidence=ECO:0000269|PubMed:11742345; ACT_SITE 259; /note=Charge relay system; /evidence=ECO:0000269|PubMed:11742345; ACT_SITE 287; /note=Charge relay system; /evidence=ECO:0000269|PubMed:11742345 |
| Activity Regulation | |
| Binding Site | BINDING 44; /note=Substrate; BINDING 118; /note=Substrate; via amide nitrogen |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=cocaine + H2O = benzoate + ecgonine methyl ester + H(+); Xref=Rhea:RHEA:27506, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:16150, ChEBI:CHEBI:59908, ChEBI:CHEBI:60056; EC=3.1.1.84; Evidence={ECO:0000269|PubMed:10698749, ECO:0000269|PubMed:12369817, ECO:0000269|PubMed:20436035}; |
| DNA Binding | |
| EC Number | 3.1.1.84 |
| Enzyme Function | FUNCTION: Hydrolyzes cocaine to benzoate and ecgonine methyl ester, endowing the bacteria with the ability to utilize cocaine as a sole source of carbon and energy for growth, as this bacterium lives in the rhizosphere of coca plants. Also efficiently hydrolyzes cocaethylene, a more potent cocaine metabolite that has been observed in patients who concurrently abuse cocaine and alcohol. Is able to prevent cocaine-induced convulsions and lethality in rat. {ECO:0000269|PubMed:10698749, ECO:0000269|PubMed:12369817, ECO:0000269|PubMed:16968810}. |
| Temperature Dependency | BIOPHYSICOCHEMICAL PROPERTIES: Temperature dependence: Is relatively unstable at physiological temperatures since it displays a half-life of 13 minutes in rat plasma at 37 degrees Celsius. {ECO:0000269|PubMed:12369817, ECO:0000269|PubMed:16968810}; |
| PH Dependency | BIOPHYSICOCHEMICAL PROPERTIES: pH dependence: Optimum pH is 9.0. {ECO:0000269|PubMed:12369817}; |
| Pathway | PATHWAY: Alkaloid degradation; cocaine degradation. |
| nucleotide Binding | |
| Features | Active site (3); Beta strand (28); Binding site (2); Chain (1); Helix (19); Mutagenesis (14); Region (4); Site (1); Turn (6) |
| Keywords | 3D-structure;Cytoplasm;Direct protein sequencing;Hydrolase;Serine esterase |
| Interact With | |
| Induction | INDUCTION: Positively induced by cocaine. {ECO:0000269|PubMed:10698749}. |
| Subcellular Location | SUBCELLULAR LOCATION: Cytoplasm {ECO:0000305}. |
| Modified Residue | |
| Post Translational Modification | |
| Signal Peptide | |
| Structure 3D | X-ray crystallography (15) |
| Cross Reference PDB | 1JU3; 1JU4; 1L7Q; 1L7R; 3I2F; 3I2G; 3I2H; 3I2I; 3I2J; 3I2K; 3IDA; 3PUH; 3PUI; 4P08; 7F65; |
| Mapped Pubmed ID | 20086035; 24919140; 34351032; |
| Motif | |
| Gene Encoded By | |
| Mass | 62,132 |
| Kinetics | BIOPHYSICOCHEMICAL PROPERTIES: Kinetic parameters: KM=0.64 uM for cocaine {ECO:0000269|PubMed:12369817}; KM=1.6 uM for cocaethylene {ECO:0000269|PubMed:12369817}; Note=kcat is 7.8 sec(-1) with cocaine as substrate, and 9.4 sec(-1) with cocaethylene.; |
| Metal Binding | |
| Rhea ID | RHEA:27506 |
| Cross Reference Brenda | 3.1.1.84; |