花生种子发育过程几丁质内切酶、外切酶与抗黄曲霉侵染的关系研究。

Study on relationships between endochitinase exochitinase and resistance to aspergillus flavus during seeds development of arachis hypogaea l.

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科学家想要知道一种类似艾滋病毒的逆转录病毒所产生的蛋白质切酶的结构。

Scientists wanted to know the structure of a protein-cutting enzyme produced by a retrovirus similar to HIV.

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细菌有一种对病毒的防御机制：一种叫做限制性内切酶的化学物质可以切断外源dna。

Bacteria have defences against viruses in the form of chemicals called restriction enzymes, which chop up foreign DNA.

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Or you could ask the question, I have this restriction enzyme, at what regions on this plasmid will it cut?

你也可以这样问,我的这种限制性内切酶,会从质粒的哪个区域切开呢

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Cutting involves enzymes called restriction endonucleases or restriction enzymes, which I've already mentioned and they have names.

切割用到的酶叫限制性核酸内切酶,或限制性内切酶,我已经提到过了,而且它们都有名字

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In this case, this particular restriction enzyme cuts symmetrically like this, but not at the same point.

在我们这种情况下,这个限制性内切酶总是这样对称地切割,但两条链切割的位点不一样

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