. "\"A transcription regulation process in which the presence of one nitrogen source leads to a decrease in the frequency, rate, or extent of transcription, from an RNA polymerase II promoter, of specific genes involved in the metabolism of other nitrogen sources.\" [GOC:mah, GOC:txnOH, PMID:19104072]" . . "nitrogen catabolite repression of transcription from RNA polymerase II promoter" . "negative regulation of transcription from RNA polymerase II promoter by nitrogen catabolites" . . .