Genomics & Genetics Weekly
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Life Sciences
Reports from S. Mesa and colleagues advance knowledge in life sciences
December 12th, 2008
"Symbiotic N-2 fixation in Bradyrhizobium japonicum is controlled by a complex transcription factor network. Part of it is a hierarchically arranged cascade in which the two-component regulatory system FixLJ, in response to a moderate decrease in oxygen concentration, activates the fixK(2) gene," scientists in Zurich, Switzerland report. "The FixK(2) protein then activates not only a number of genes essential for microoxic respiration in symbiosis (fixNOQP and fixGHIS) but also further regulatory genes (rpoN(1), nnrR, and fixK(1)). The results of transcriptome analyses described here have led to a comprehensive and expanded definition of the FixJ, FixK(2), and FixK(1)...
Source: Genomics & Genetics Weekly (2008-12-12)
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