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,M-L; Simpson,PJ; O'Dwyer,K; Matthews,SJ; Paget,MS (NUCLEIC ACIDS RESEARCH, 2013)