Nitrogen metabolism in prokaryotes involves the coordinated expression of a large number
of enzymes concerned with both utilization of extracellular nitrogen sources and intracellular …

SUMMARY ς54 has several features that distinguish it from other sigma factors in
Escherichia coli: it is not homologous to other ς subunits, ς54-dependent expression …

Biological nitrogen fixation catalyzed by Mo-nitrogenase of symbiotic diazotrophs has
attracted interest because its potential to supply plant-available nitrogen offers an alternative …

In R. capsulatus synthesis and activity of the molybdenum and the alternative nitrogenase is
controlled at three levels by the environmental factors ammonium, molybdenum, light, and …

For the metabolically diverse nonsulfur purple phototrophic bacteria, maintaining redox
homeostasis requires balancing the activities of energy supplying and energy-utilizing …

Purple photosynthetic bacteria are capable of generating cellular energy from several
sources, including photosynthesis, respiration, and H2 oxidation. Under nutrient-limiting …

The C‐signal is a morphogen that controls the assembly of fruiting bodies and the
differentiation of myxospores. Production of this signal, which is encoded by the csgA gene …

Increasing numbers of small, regulatory RNAs (sRNAs) corresponding to 3′ untranslated
regions (UTR) are being discovered in bacteria. One such sRNA, denoted GlnZ …

Pseudomonas sp. strain ADP is the model strain for studying bacterial degradation of the s-
triazine herbicide atrazine. In this work, we focused on the expression of the atzDEF operon …

The bacterial pathogen Legionella pneumophila responds to environmental changes by
differentiation. At least two forms are well described: replicative bacteria are avirulent; in …