. "\"A transcription regulation process in which the presence of one carbon source leads to a decrease in the frequency, rate, or extent of transcription of specific genes involved in the metabolism of other carbon sources. Carbon catabolite repression is a mechanism of genetic regulation which the accumulation of catabolites of one substance in the cell represses the formation of enzymes that contribute to the catabolism of other substances.\" [GOC:mah, ISBN:0198506732, PMID:11018147, PMID:18359269, PMID:9618445]" . . "carbon catabolite repression of transcription" . "carbon catabolite repression" . "negative regulation of transcription by carbon catabolites" . . .