The manganese-responsive repressor Mur of Rhizobium leguminosarum is a member of the Fur-superfamily that recognizes an unusual operator sequence.

@article{DazMireles2005TheMR,
  title={The manganese-responsive repressor Mur of Rhizobium leguminosarum is a member of the Fur-superfamily that recognizes an unusual operator sequence.},
  author={Edit D{\'i}az-Mireles and Margaret Wexler and Jonathan D. Todd and Dominico Bellini and Andrew W. B. Johnston and Robert Gary Sawers},
  journal={Microbiology},
  year={2005},
  volume={151 Pt 12},
  pages={4071-8}
}
The manganese uptake regulator Mur of Rhizobium leguminosarum is a close homologue of the global iron regulatory protein Fur. Mur represses the sitABCD operon, which encodes a Mn2+ transport system, specifically in response to Mn2+ but not Fe2+. In previous work the authors mapped the 5' ends of two sit operon transcripts, termed TS1 and TS2, which were co-ordinately regulated by Mn2+-Mur, but this paper now shows that only TS1 is a primary transcript. DNase I protection analyses showed that… CONTINUE READING