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. 1997 Sep 2;94(18):9590–9595. doi: 10.1073/pnas.94.18.9590

Table 1.

Reduction rate constants (kred) and dissociation constants (Kd) for reaction of lactate oxidases with α-1H- and α-2H-para-substituted mandelates at 25°C and pH 7

Mandelate derivative Wild-type lactate oxidase
A95G lactate oxidase
kred, sec−1
Kd, mM
R-value kred, sec−1
Kd, mM
R-value
α-1H- (α-2H-) α-1H- (α-2H-) α-1H- (α-2H-) α-1H- (α-2H-)
DL- OH- 0.009 2.03 0.9856 0.29 16.2 0.9996
(ND) (ND) (ND) (ND)
L- CH3O- 0.055 0.83 0.9939 1.61 4.0 0.9993
(0.009) (0.98) 0.9854 (0.38) (5.8) 0.9998
L- CH3- 0.048 0.34 0.9721 3.17 3.9 0.9998
(0.007) (0.34) 0.8226 (0.60) (3.5) 0.9994
L- H- 0.038 0.64 0.9747 5.88 6.3 0.9999
DL- H- (0.010) (0.61) 0.9888 (1.52) (4.3) 0.9995
L- F- 0.037 0.36 0.9558 1.85 3.6 0.9998
(ND) (ND) (ND) (ND)
L- Cl- 0.023 0.23 0.8972 0.98 1.3 0.9962
(0.003) (0.12) 0.5882 (0.18) (1.8) 0.9978
L- CF3- 0.018 0.51 0.9064 0.20 3.1 0.9943
(0.003) (0.37) 0.9883 (0.05) (5.6) 0.9987
L- NO2- 0.017 0.34 0.9785 0.21 3.2 0.9977
(ND) (ND) (ND) (ND)

ND, no data.