cystathionine

例句：

1. 1. Cystathionine is an essential amino acid that plays a crucial role in the body's metabolism.
   胱硫氨酸是一种必需的氨基酸，在身体代谢中起着关键作用。
2. 2.The diet of a person with cystic fibrosis often includes high levels of cystathionine to help manage their symptoms.
   患有囊性纤维化的人的饮食通常包括高水平的胱硫氨酸，以帮助管理他们的症状。
3. 3. In addition to its role in protein synthesis, cystathionine also plays a vital rolein the production of melanin in the skin.
   胱硫氨酸除了在蛋白质合成中的作用外，还在皮肤中黑色素的产生中发挥着重要作用。