而胆汁盐和金属盐对脂肪酶的修饰作用不大，在高浓度时反而会抑制酶的活性。

Bile salts and metal salts had nearly no improvment in the activities of lipase, and even inhibited that at slightly higher concentration.

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但RNA编辑又来捣乱了：向导RNA和酶作用于信使RNA的修饰过程，这就使仅仅从基因序列来推断最终的蛋白序列成为不可能。

Then along came RNA editing, in which guide RNAs or enzyme action modify some messenger RNAs such that the final protein sequence cannot be deduced from the gene sequence alone.

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酶的催化中心是由一组氨基酸组成，其三维结构形成活性位点，允许它高效地结合或修饰底物。

The catalytic center of an enzyme is composed of a set of amino acids whose three-dimensional arrangement forms the "active-site" that allows them to efficiently bind and modify the substrate.

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