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Aerobic Denitrifying Bacteria That Produce Low Levels of Nitrous Oxide
Results indicated that strains TR2 and K50 are aerobic denitrifiers, which should be useful for future investigations of the mechanisms ofDenitrifying bacteria that regulate N2O emission, the single-stage process for nitrogen removal, and microbial N 2O emission into the ecosystem. Expand
Codenitrification and denitrification are dual metabolic pathways through which dinitrogen evolves from nitrate in Streptomyces antibioticus.
A unique system in an actinomycete that produces gaseous nitrogen (N( 2) and N(2)O) through both denitrification and codenitrification is demonstrated. Expand
Ammonia Fermentation, a Novel Anoxic Metabolism of Nitrate by Fungi*
This fungus is the first eukaryotic, facultative anaerobe known to express one of three distinct metabolic energy mechanisms closely depending on environmental O2 tension, and it is showed that ammonia fermentation occurs in many other fungi that are common in soil, suggesting that facultativeAnaerobes are widely distributed among fungi that have been considered aerobic organisms. Expand
The Glutathione System of Aspergillus nidulans Involves a Fungus-specific Glutathione S-Transferase*
Up-regulation of thioredoxin reductase, peroxiredoxins, catalases, and cytochrome c peroxidase in the glrA-deletion strain revealed interplay between the glutathione system and both the thiOREDoxin system and hydrogen peroxide defense mechanisms. Expand
Response to Hypoxia, Reduction of Electron Acceptors, and Subsequent Survival by Filamentous Fungi
  • N. Takaya
  • Biology, Medicine
  • Bioscience, biotechnology, and biochemistry
  • 23 January 2009
This review examines the metabolic mechanisms used by filamentous fungi under oxygen-limited (hypoxic) conditions and suggests that ammonia fermentation and nitrate utilization mechanisms probably share a nitrate-reducing mechanism. Expand
Dissimilatory nitrate reduction metabolisms and their control in fungi.
  • N. Takaya
  • Chemistry, Medicine
  • Journal of bioscience and bioengineering
  • 1 December 2002
Fungal nitric oxide reductase uses NADH as the direct electron donor in contrast to bacterial systems and thus might function in regeneration of NAD+ and detoxification of the toxic radical, nitricoxide. Expand
Glutathione Reductase/Glutathione Is Responsible for Cytotoxic Elemental Sulfur Tolerance via Polysulfide Shuttle in Fungi*
Findings that GR-deficient mutants derived from Saccharomyces cerevisiae and Aspergillus nidulans reduced less sulfur and that their growth was hypersensitive to elemental sulfur indicated a wide distribution of the GR/glutathione system among fungi. Expand
Fusarium oxysporum Fatty-acid Subterminal Hydroxylase (CYP505) Is a Membrane-bound Eukaryotic Counterpart of Bacillus megaterium Cytochrome P450BM3*
Results provide conclusive evidence that P450foxy is the eukaryotic counterpart of bacterial P450BM3, which evokes interest in the evolutionary aspects concerning the P450 superfamily along with its reducing systems. Expand
Oxygen requirement for denitrification by the fungus Fusarium oxysporum
Denitrification by F. oxysporum has unique features, namely, a minimal O2 requirement and competition with assimilatory NO3–, suggesting competition for the substrate between assimilatory and dissimilatory types of NO3- reduction. Expand
Purification of two chitinases from Rhizopus oligosporus and isolation and sequencing of the encoding genes.
Two chitinases were purified from Rhizopus oligosporus, a filamentous fungus belonging to the class Zygomycetes, and it is concluded that these chit inases are synthesized with pre- and prosequences in addition to the mature enzyme sequences and that the pro sequences are located at the C terminal. Expand