Stomach acid breaks the enzyme down and reduces its activity.

胃酸会分解这种酶并降低其活性。

To protect the pancreas, the acinar cells manufacture inactive forms of the enzymes called proenzymes, or zymogens.

为了保护胰腺，腺泡细胞会产生这些酶的无活性形式，称为“酶原”。

Then near these CRISPR locations are Cluster associated or Cas proteins, many of which have enzymatic activity.

这些CRISPR位点附近有基因编码成簇相关蛋白，即Cas蛋白，它们许多都有酶活性。

This work has led to the creation of proteins with new enzymatic activities, able to catalyze useful chemical reactions.

“这项研究创造出具有新型酶活性的蛋白质，这种蛋白质可以催化有益的化学反应。

He therefore wondered if he could isolate the enzyme's active centre and yet preserve its activity. In fact, he did better.

因此，想知道是否能分离出这种酶的活性中心，同时又能保持它的活性。事，比想象中更好。

Their main method of destruction is blocking the action of enzymes called RNA polymerases.

它们的主要破坏手段是抑制被称为RNA聚合酶的酶的活性。

Researchers used directed evolution to improve the enzyme's activity.

研究人员使用定向进化来提高酶的活性。

It takes a lot of enzymatic activity, a lot of blood flow.

它需要大量的酶活性和血液流动。

So without nitric oxide, you have less telomere, telomerase enzyme, and that telomerase enzyme isn't functional.

因此，若缺乏氮氧化物， 端粒会减少，端粒酶酶活性也会降低， 导致该端粒酶功能失常。

We can find an enzyme that has some starting activity, some clay that we can work with.

我们可以找到一种具有初步活性的酶，一些可以利用的土壤。

So now once we have the enzyme inside the active site, there's going to be a chemical tug.

因此，一旦酶进入活性位点，就会发生化学拉力。

As the antibody- antigen complex circulates in the blood, the complex " fixes" complement to it.

结果是，补体激活了强活性的酶的产生，穿透了细菌细胞壁，并使细菌有机体破裂。

Dr Hazen has shown, in yet further experiments on mice, that microbe-generated TMAO interferes with liver enzymes that make bile acids—substances that help remove excess cholesterol.

Hazen博士已经由在老鼠中进行后续验证，细菌产生的TMAO干扰肝脏酶的活性，后者可产生胆酸，一种有助于清除过多胆固醇的物质。

But heavy drinking can alter enzyme activity so more of that byproduct is produced, potentially causing liver damage even with what's usually a safe dose of acetominophen.

但是大量饮酒却会使酶的活性发生变化。即便只是服用乙酰氨基酚的安全用量，因饮酒而被分解出更多的副产物以残留，进而可能会导致肝损伤。

Efforts are underway to seek methods to inhibit the enzyme activity of DPP4, which holds the potential to enhance the efficacy of existing medications and even discover new treatment approaches.

目前正在努力寻找抑制 DPP4 酶活性的方法，DPP4 酶活性有可能提高现有药物的疗效，甚至发现新的治疗方法。

They saw significantly increased levels of cleaved caspase activity, specifically within the cancer cells, but only when IFNU was present and presumably activating this whole pathway.

们观察到，裂解型半胱天冬酶活性水平显着升高，且主要出现在癌细胞内，但仅在IFNγ存在并可能激活该整个通路的情况下才出现。

And the problem is they both use the same enzymes to convert into their active forms, and so a high omega-6 load can crowd out omega-3 conversion.

问题在于它们都需要相同的酶才能转化为活性形式，因此高量的omega-6会抑制omega-3的转化。

In addition to estrogen, the granulosa cells also secrete a hormone called activin, which stimulates FSH production, as well as binding to FSH receptors, and the activity of granulosa cell aromatase as well.

除了雌激素，颗粒细胞还会分泌一种激素叫激活素，它可以刺激FSH的分泌，与FSH受体结合；并且与颗粒细胞芳香酶的活性有关。

And maybe more importantly, when the hydrochloric acid is combined with pepsinogen, an inactive enzyme that's secreted by another kind of stomach cell called chief cells, the mixture creates the protein-digesting enzyme pepsin.

也许更重要的是，当盐酸与胃蛋白酶原结合时，胃蛋白酶原是一种非活性酶，由另一种被称为主细胞的胃细胞分泌，混合物产生蛋白质消化酶胃蛋白酶。

Because digestion is such an active process and particularly digesting animal protein that's high in fat, high in protein, requires a lot of blood flow, a lot of enzymatic activity that leads to a lot of dilation and flushing.

消化是一个高度活跃的过程，尤其是消化高脂肪、高蛋白的动物性蛋白质，需要大量的血液流动和酶活性，这导致了广泛的血管扩张和面部潮红。