A dynamic homodimer structure of the response regulator FixJ from Bradyrhizobium japonicum in its phosphorylated state in aqueous solution.
The symbiotic nitrogen-fixing bacterium Bradyrhizobium japonicum possess a two component regulatory system comprising FixL, a histidine kinase with O2-sensor, and FixJ, a response regulator controlling the expression of nitrogen fixation-related genes. The phosphotransfer from FixL to the N-terminal receiver domain (RE...