kynurenine hydroxylase

例句：

1. 1.The enzyme plays a crucial role in the metabolism of tryptophan.
   该酶在色氨酸代谢中起着关键作用。
2. 2.Kynurenine hydroxylase is an important enzyme in the production of neurotransmitters.
   色氨酸羟化酶是一种重要的酶，用于生产神经递质。
3. 3. In this study, we investigated the expression levels of kynurenine hydroxylase in different brain regions.
   在本研究中，我们调查了不同脑区色氨酸羟化酶的表达水平。