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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Evidence for autoregulation of the nusA-infB operon of Escherichia coli.

Analysis of three different nusA mutant strains suggests that the expression of the nusA-infB operon of Escherichia coli is regulated autogenously by the nusA gene product, a protein known to mediate transcription termination and antitermination. The cellular amounts of NusA and IF2 (infB) proteins are enhanced by a nusAts mutation which causes reduced transcription-termination activity. A nusAam mutant carrying the am ts suppressor, supFts6, overproduces the IF2 protein when the amount of NusA protein is reduced by the thermal inactivation of the supFts6. A modified form of NusA with the cat protein of Mr of 24 000 attached to the C terminus of NusA is overproduced compared to the wild-type NusA and causes the overproduction of IF2.[1]

References

  1. Evidence for autoregulation of the nusA-infB operon of Escherichia coli. Nakamura, Y., Plumbridge, J., Dondon, J., Grunberg-Manago, M. Gene (1985) [Pubmed]
 
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