Table 1. Steady-state enzyme kinetics parameters for the activity of lpPAH at the selected conditions.

V max a	K m(L-Phe)a	K m(BH4)b	C 0.5(Fe(II))c
µmol L-Tyr ⋅ min−1 ⋅ mg−1	µM	µM	µM
10.2±0.3	735±50	125±25	1.3±0.5

^aMeasured at 200 µM BH₄ in L-Phe saturation curves.

^bMeasured at 1 mM L-Phe in BH₄ saturation curves.

^cConcentration of Fe(II) that provides half-maximal activity, measured in the range 0–50 µM Fe(II).