An isolated DNA Molecule that encodes an enzyme carboxilestearasa malathion; A Transformed cell containing Said DNA Molecule; Enzyme method to eliminate or carboxilestearasa malathionReducing the concentration of Pesticide Residues by the Enzyme, and a method

摘要

The present invention provides a separated DNA molecule that encodes an enzyme capable of separating at least one selected organophosphate from a population consisting of carblist organophosphate and diethyl Oxon organophosphate.It is better to have at least 80% homology, and at least 95% homology with lcalfae7. In lcalfae7, the lapprotein encoded by DNA molecule is different from at least Trp at 251 position, which is an amino acid selected from Leu, Ser, ala, ile, Val, THR, Cys and Gly. The favorite alternatives are Leu and ser The invention also provides a DNA molecule to transform cells,The enzyme can be used to eliminate or reduce the concentration of pesticide residues. Its main components are decabromodiphenyl ether and dimethoxy organophosphorus. In addition, a method for producing the enzyme is provided.