regulatory protein的用法和樣例：
例句
- CKI plays a negative regulatory role by inhibiting the activity of cyclin-CDK.
細胞周期調節蛋白在細胞周期中的表達和作用已成為當今研究的熱門話題。 - By interplaying each other, the two regulatory groups control the initiation, phase transitions, exit and termination of the cell-cycle.
本文將在簡述細胞周期之後，就細胞周期調節蛋白的分子生物學研究進展進行綜述。
