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The repressor is essentially a negative control mechanism .

阻遏物基本上是一种负控制机制。

How does the repressor control the operator gene

阻遏物如何控制操纵基因？

Remain the world 's largest repressor of media freedom .

而中国维持为最大的媒体自由压迫者。

It has an effect exactly opposite to that of repressor binding to an operator .

它与阻遏物结合到操作子上的作用正好相反。

Effector a molecule that can combine with a repressor in an operon , making the repressor inactive and thus enabling messenger rna and protein to be produced .

在操纵子中与阻遏蛋白结合的分子，能够使阻遏蛋白失活，从而转录出。