Enzymatic hydrolysis of malathion and other dithioate pesticides |
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| Authors: | S Barik D M Munnecke J S Fletcher |
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| Institution: | (1) Department of Botany and Microbiology, University of Oklahoma, Norman, OK, USA;(2) Present address: Dept. of Dairy Science and Microbiology, Univ. of Illinois, 61801 Urbana, Illinois, USA;(3) Present address: Cities Service Co., Enhanced Recovery Research, P.O. Box 3908, 74102 Tulsa, OK, USA |
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| Abstract: | Summary Constitutive, cell free enzyme extracts derived from two strains of Arthrobacter sp. SB 3 and SB 4 hydrolyzed malathion and exhibited Km values of 1.3 and 2.0  mol/mg protein.min respectively. These two enzyme extracts had a broad pH optimum (6–9), a temperature optimum of 25 °C and 36 °C and were not strongly affected by high salt or solvent concentrations (up to 5%). |
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