Table 1.

Steady-state kinetic parameters

Parameter	kcat, s−1	Km, μM	Ki, μM	kcat/Km, M−1 s−1 × 108
AtAPSKred	272 ± 39	0.48 ± 0.41	37.5 ± 6.9	5.67
AtAPSKox	14.1 ± 2.3	0.43 ± 0.26	2.51 ± 0.84	0.328
C86A/C119Ared	239 ± 44	1.90 ± 0.53	34.8 ± 2.7	1.25
C86A/C119Aox	203 ± 31	0.87 ± 0.49	41.6 ± 7.1	2.33
SynAPSKred	18.6 ± 4.5	0.33 ± 0.17	27.6 ± 3.5	0.56
SynAPSKox	15.9 ± 2.2	0.57 ± 0.26	21.6 ± 3.7	0.28

Average values ± SE (n = 3) are shown.