The NusB protein is involved in the regulation of rRNA biosynthesis by transcriptional antitermination.

1: Solution structure of the antitermination protein NusB of Escherichia coli: a novel all-helical fold for an RNA-binding protein. Huenges M, Rolz C, Gschwind R, Peteranderl R, Berglechner F, Richter G, Bacher A, Kessler H,Gemmecker G; EMBO J 1998;17:4092-4100. PMID:9670024