a gene that activates the production of messenger RNA by adjacent structural genes
双语例句
If an inducer molecule is present, it binds to repressor and changes its conformation so that it is unable to bind to the operator. 但是,某些称为共同抑制物的分子可以与阻遏蛋白质结合,并改变它的构造,使得它能与操纵基因结合。