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Table 1 Kinetic parameters for the hydrolysis of various AOPP herbicides

From: Purification and properties of a novel quizalofop-p-ethyl-hydrolyzing esterase involved in quizalofop-p-ethyl degradation by Pseudomonas sp. J-2

  K m (µM) K cat (s−1) K cat/K m (s−1 µM−1) Enzyme activity (U/mg)
QPE 41.3 ± 3.6 127.3 ± 4.5 3.08 ± 0.03 198.9 ± 2.7
Quizalofop-P-tefuryl 29.5 ± 2.7 146.4 ± 3.3 4.96 ± 0.09 238.1 ± 4.1
Fenoxaprop-P-ethyl 26.9 ± 4.3 161.6 ± 3.4 6.01 ± 0.05 257.2 ± 3.7
Haloxyfop-P-methyl 113.9 ± 3.8 67.4 ± 2.6 0.59 ± 0.04 64.7 ± 2.4
Cyhalofop-butyl 158.2 ± 3.5 41.1 ± 4.1 0.26 ± 0.03 48.6 ± 3.1
Clodinafop-propargyl 174.0 ± 4.2 37.1 ± 2.9 0.21 ± 0.02 42.3 ± 2.8