Telomerase is an enzyme that is produced only in cells that are actively dividing.

端粒酶是一种只在活跃分裂的细胞中产生的酶。

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This is significant, because the amino acid sequence of an enzyme is determined by genes.

这很重要，因为酶的氨基酸序列是由基因决定的。

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But when we analyze these cells chemically, we find something very interesting, a chemical in them, an enzyme called telomerase.

但当我们用化学方法分析这些细胞时，我们发现了一些非常有趣的东西，其中有一种化学物质，是一种叫做端粒酶的酶。

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Doctor Chan says the effects appeared especially strong among patients with tumors expressing an enzyme called COX-2.

VOA: special.2009.09.01

So, she is interested in how this molecule, gemcitabine, inhibits an enzyme. So, to do those studies, she needs to know a lot of the stuff on this list.

她对这个分子，二氟脱氧胞嘧啶核苷怎么抑制酶很感兴趣，要做这些研究。

麻省理工公开课 - 化学原理课程节选

Of course, she needs to know the basic principles, but she's also talking about it an enzyme, so she needs to know about enzyme catalysis.

她需要知道这表上的许多东西，当然她需要知道到这些基本原理，她研究的是一种酶。

麻省理工公开课 - 化学原理课程节选

Those afflicted by the disease are missing an enzyme that breaks down a particular fat.

FORBES: Magazine Article

The machine takes a single DNA strand and uses an enzyme to attach bases to it.

FORBES: Magazine Article

NDM-1 is an enzyme produced by some bacteria which makes them resistant to carbapenem antibiotics.

BBC: Action on antibiotics