在前三种底物条件下，当高底物浓度时，L-苯丙氨酸表现出反竞争性抑制作用；低底物浓度时，则呈现激活作用。
As the former three substrates were employed, at high substrate concentration, L-Phe inhibited the enzyme uncompetitively and activated the enzyme at low substrate concentration.
在前三种底物条件下，当高底物浓度时，L-苯丙氨酸表现出反竞争性抑制作用；低底物浓度时，则呈现激活作用。
As the former three substrates were employed, at high substrate concentration, L-Phe inhibited the enzyme uncompetitively and activated the enzyme at low substrate concentration.
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