此种蛋白质的一个例子就是牛胰胰蛋白酶抑制剂(BPTI)，它有58个氨基酸残基，呈但链，含有三个二硫键。
One such protein is bovine pancreas trypsin inhibitor (BPTI), which has 58 amino acid residues in a single chain and contains three disulfide bonds.
胰酶胰液中酶的混合物，如淀粉酶、脂酶和胰蛋白酶，从牛或猪等动物身上提炼出来，用作助消化。
A mixture of the enzymes of pancreatic juice, such as amylase, lipase, and trypsin, extracted from animals such as cattle or hogs and used as a digestive aid.
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