Positive regulation of gene expression has a specific meaning relating to the effect of a regulatory protein on the gene in question. In which of the following systems does positive regulation occur?

Question

Quizplus · Accepted Answer

Catabolite repression involves positive regulation because it involves the activation of gene expression in the presence of certain catabolites (e.g., cAMP levels increase in the absence of glucose, leading to the activation of CAP protein, which then enhances the transcription of operons involved in the metabolism of alternative sugars).

Positive Regulation of Gene Expression Has a Specific Meaning Relating