正调节 positive regulation, positive co-ntrol
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正调节 positive regulation, positive co-ntrol 某个基因性状的表达必须要有特定调节性蛋白质的存在,这样的调节称正调节。例如,与cAMP结合的cAMP受体蛋白质附着到乳糖操纵子的启动子上后,RNA多聚酶才容易地附到该启动子上,从而才大大促进mRNA的合成。
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