Members of this family are regulators of the anti-sigma E protein RseD.

1: Differentiation of Pseudomonas aeruginosa into the alginate-producing form: inactivation of mucB causes conversion to mucoidy. Martin DW, Schurr MJ, Mudd MH, Deretic V; Mol Microbiol 1993;9:497-506. PMID:8412698

2: Characterization of the genes coding for the putative sigma factor AlgU and its regulators MucA, MucB, MucC, and MucD in Azotobacter vinelandii and evaluation of their roles in alginate biosynthesis. Martinez-Salazar JM, Moreno S, Najera R, Boucher JC, Espin G, Soberon-Chavez G, Deretic V; J Bacteriol 1996;178:1800-1808. PMID:8606151

3: Crystal structure of RseB and a model of its binding mode to RseA. Kim DY, Jin KS, Kwon E, Ree M, Kim KK; Proc Natl Acad Sci U S A. 2007;104:8779-8784. PMID:17496148