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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) | ||||
nusA | Transcription termination-antitermination factor NusA; Participates in both transcription termination and antitermination. (405 aa) | ||||
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) | ||||
rho | Transcription terminator factor Rho; Facilitates transcription termination by a mechanism that involves Rho binding to the nascent RNA, activation of Rho's RNA- dependent ATPase activity, and release of the mRNA from the DNA template. (430 aa) | ||||
nusG | Transcription antitermination protein NusG; Participates in transcription elongation, termination and antitermination. (182 aa) | ||||
nusB | Transcription termination factor NusB; Involved in transcription antitermination. Required for transcription of ribosomal RNA (rRNA) genes. Binds specifically to the boxA antiterminator sequence of the ribosomal RNA (rrn) operons. (139 aa) |