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J. Bacteriol., Jan 1998, 186-189, Vol 180, No. 1
T Hoffmann, N Frankenberg, M Marino and D Jahn
During anaerobic nitrate respiration Bacillus subtilis reduces nitrate via
nitrite to ammonia. No denitrification products were observed. B. subtilis
wild-type cells and a nitrate reductase mutant grew anaerobically with
nitrite as an electron acceptor. Oxygen-sensitive dissimilatory nitrite
reductase activity was demonstrated in cell extracts prepared from both
strains with benzyl viologen as an electron donor and nitrite as an
electron acceptor. The anaerobic expression of the discovered nitrite
reductase activity was dependent on the regulatory system encoded by resDE.
Mutation of the gene encoding the regulatory Fnr had no negative effect on
dissimilatory nitrite reductase formation.
Copyright © 1998, American Society for Microbiology
Ammonification in Bacillus subtilis utilizing dissimilatory nitrite reductase is dependent on resDE [In Process Citation]
Institut fur Organische Chemie und Biochemie, Albert-Ludwigs- Universitat Freiburg, Germany.
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