tetrapeptide

例句：

1. 1. The protein is made up of four amino acids linked together in a specific order.
   这个蛋白质是由四个氨基酸按照特定顺序连接而成的。
2. 2. The researchers discovered that the tetrapeptide sequence was crucial for the function of the enzyme.
   研究人员发现，这个四肽序列对于酶的功能至关重要。
3. 3. The study focused on the role of tetrapeptides in immune responses and inflammation.
   该研究专注于四肽在免疫反应和炎症中的作用。