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pyrR2 | Pyrimidine operon regulator; Regulates transcriptional attenuation of the pyrimidine nucleotide (pyr) operon by binding in a uridine-dependent manner to specific sites on pyr mRNA. This disrupts an antiterminator hairpin in the RNA and favors formation of a downstream transcription terminator, leading to a reduced expression of downstream genes (By similarity). Belongs to the purine/pyrimidine phosphoribosyltransferase family. PyrR subfamily. (174 aa) | ||||
upp | Uracil phosphoribosyltransferase; Catalyzes the conversion of uracil and 5-phospho-alpha-D- ribose 1-diphosphate (PRPP) to UMP and diphosphate. (209 aa) | ||||
pyrR1 | Pyrimidine operon regulator; Regulates transcriptional attenuation of the pyrimidine nucleotide (pyr) operon by binding in a uridine-dependent manner to specific sites on pyr mRNA. This disrupts an antiterminator hairpin in the RNA and favors formation of a downstream transcription terminator, leading to a reduced expression of downstream genes (Probable). Belongs to the purine/pyrimidine phosphoribosyltransferase family. PyrR subfamily. (180 aa) |