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. Author manuscript; available in PMC: 2006 Apr 21.
Published in final edited form as: Chem Res Toxicol. 2005 Sep;18(9):1371–1377. doi: 10.1021/tx050072+

Table 2.

.Kinetic Constants for Carboxylesterases toward Cypermethrin Analogues

CEs substrate Km (μM) kcat( × 10-4s-1) kcat/Km(M-1s-1)
hCE1 1S cis, αR 2.3 ± 0.5 1.8 ± 0.1 78 ± 4
1R trans, αS 19.0 ± 1.2 600 ± 30 3200 ± 200
BAC36707a 1R cis, αS 1.68 ± 0.06 20 ± 2 1200 ± 200
1S trans, αS 4.36 ± 0.34 7700 ± 1300 180000 ± 30000
a

Data were presented in ref 13.