RbpA is a family bacterial RNA polymerase-binding proteins. RbpA acts as a transcription factor by binding to the sigma subunit of RNA polymerase [1-7].

1: The RNA polymerase-binding protein RbpA confers basal levels of rifampicin resistance on Streptomyces coelicolor. Newell KV, Thomas DP, Brekasis D, Paget MS; Mol Microbiol. 2006;60:687-696. PMID:16629670

2: Role of an RNA polymerase interacting protein, MsRbpA, from Mycobacterium smegmatis in phenotypic tolerance to rifampicin. Dey A, Verma AK, Chatterji D; Microbiology. 2010;156:873-883. PMID:19926651

3: Molecular insights into the mechanism of phenotypic tolerance to rifampicin conferred on mycobacterial RNA polymerase by MsRbpA. Dey A, Verma AK, Chatterji D; Microbiology. 2011;157:2056-2071. PMID:21415119

4: Isolation of conditional expression mutants in Mycobacterium tuberculosis by transposon mutagenesis. Forti F, Mauri V, Deho G, Ghisotti D; Tuberculosis (Edinb). 2011;91:569-578. PMID:21840262

5: Mycobacterium tuberculosis RbpA protein is a new type of transcriptional activator that stabilizes the sigma A-containing RNA polymerase holoenzyme. Hu Y, Morichaud Z, Chen S, Leonetti JP, Brodolin K; Nucleic Acids Res. 2012;40:6547-6557. PMID:22570422

6: Mycobacterium tuberculosis RNA polymerase-binding protein A (RbpA) and its interactions with sigma factors. Bortoluzzi A, Muskett FW, Waters LC, Addis PW, Rieck B, Munder T, Schleier S, Forti F, Ghisotti D, Carr MD, O'Hare HM; J Biol Chem. 2013;288:14438-14450. PMID:23548911

7: The actinobacterial transcription factor RbpA binds to the principal sigma subunit of RNA polymerase. Tabib-Salazar A, Liu B, Doughty P, Lewis RA, Ghosh S, Parsy ML, Simpson PJ, O'Dwyer K, Matthews SJ, Paget MS; Nucleic Acids Res. 2013;41:5679-5691. PMID:23605043