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Literature summary for 1.7.1.4 extracted from

  • Polcyn, W.; Lucinski, R.
    Aerobic and anaerobic nitrate and nitrite reduction in free-living cells of Bradyrhizobium sp. (Lupinus) (2003), FEMS Microbiol. Lett., 226, 331-337.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
nitrate 2fold enhanced induction independently of the NH4+ concentration, growth stimulation is higher on nitrate than on nitrite Bradyrhizobium sp.

Inhibitors

Inhibitors Comment Organism Structure
additional information intracellularly accumulated nitrite can inhibit nitrate uptake, addition of nitrite at concentrations above 5 mM is toxic and causes growth retardation Bradyrhizobium sp.
NH4+ inhibits under aerobic and anaerobic conditions Bradyrhizobium sp.
O2 enzyme activity under anaerobic conditions is 2fold higher than under aerobic conditions Bradyrhizobium sp.

Organism

Organism UniProt Comment Textmining
Bradyrhizobium sp.
-
Lupinus, strain USDA 3045
-

Source Tissue

Source Tissue Comment Organism Textmining
cell culture free-living cells, yeast extract/mannitol medium Bradyrhizobium sp.
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.06
-
activity under aerobic conditions in presence of NH4+ Bradyrhizobium sp.
0.1
-
activity under aerobic conditions Bradyrhizobium sp.
0.13
-
activity under anaerobic conditions in presence of NH4+ Bradyrhizobium sp.
0.18
-
activity under anaerobic conditions Bradyrhizobium sp.

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
nitrite + reduced benzyl viologen
-
Bradyrhizobium sp. ammonium hydroxide + H2O + benzyl viologen
-
?

Synonyms

Synonyms Comment Organism
NiR
-
Bradyrhizobium sp.
nitrite reductase
-
Bradyrhizobium sp.

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
assay at Bradyrhizobium sp.

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
-
assay at Bradyrhizobium sp.

Cofactor

Cofactor Comment Organism Structure
benzyl viologen
-
Bradyrhizobium sp.