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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