title: Nitrogen Assimilation: Optimization of N-Labelled Azoverdin Production by Azomonas macrocytogenes ATCC 12334.
abstract: The effects of various nitrogen sources and of the cultivation time on the biosynthesis of N-labelled azoverdin were studied in batch cultures of Azomonas macrocytogenes ATCC 12334. Growth for 48 h in the presence of ammonium sulfate (0.2 g/liter) resulted in 95% labelling of azoverdin with N. A growth-related synthesis of azoverdin, under both nitrogen-fixing and ammonium-assimilating conditions, was observed.
authors.affiliation: Laboratory of Enzyme Technology, Institute of Microbiology, Academy of Sciences of the Czech Republic, 14220 Prague, Czech Republic.
authors.forename: M
authors.initials: M
authors.lastname: Dobisová
authors.forename: M A
authors.initials: MA
authors.lastname: Abdallah
authors.forename: P
authors.initials: P
authors.lastname: Kyslík