Article
Ammonia-induced formation of an AmtB-GlnK complex is not sufficient for nitrogenase regulation in the photosynthetic bacterium Rhodobacter capsulatus.
Journal of bacteriology - 1 Mar 2008
Tremblay Pier-Luc, Hallenbeck Patrick C
Abstract excerpt
A series of Rhodobacter capsulatus AmtB variants were created and assessed for effects on ammonia transport, formation of AmtB-GlnK complexes, and regulation of nitrogenase activity and NifH ADP-ribosylation. Confirming previous reports, H193 and H342 were essential for ammonia transport and the replacement of aspartate 185 with glutamate reduced ammonia transport. Several amino acid residues, F131, D334, and...
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