Activating Compound | Comment | Organism | Structure |
---|---|---|---|
additional information | exogenous nitrate induces the enzyme expression, can be repressed by ammonium under aerobic conditions, but not under anaerobic conditions, promotor activity study | Aspergillus nidulans |
Cloned (Comment) | Organism |
---|---|
construction of a fusion gene comprising gene the promotor of gene niaD and the Escherichia coli beta-glucuronidase gene, i.e. GUS, for analysis of promotor activity in Aspergillus nidulans | Aspergillus nidulans |
Protein Variants | Comment | Organism |
---|---|---|
additional information | construction of null-mutants of gene niaD | Aspergillus nidulans |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
additional information | exogenous ammonium represses enzyme expression under oxic conditions in presence or absence of nitrate, while under anoxic conditions the enzyme is expressed even in the presence of ammonium, promotor activity study | Aspergillus nidulans |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
nitrate + NADPH | Aspergillus nidulans | enzyme is essential for reduction of nitrate to ammonia, under oxic conditions the enzyme is involved in nitrate assimilation, under anoxic conditions the enzyme is used for dissimilatory nitrate reduction, transcription regulation mechanism via ammonium, nitrate, and O2 concentrations, overview | nitrite + NADP+ | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Aspergillus nidulans | - |
gene niaD, several strains | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.0001 | - |
below, wild-type enzyme, aerobic conditions, presence of ammonium | Aspergillus nidulans |
0.0001 | - |
below, wild-type enzyme, aerobic conditions, presence of nitrate and ammonium | Aspergillus nidulans |
0.012 | - |
wild-type enzyme, anaerobic conditions, presence of ammonium | Aspergillus nidulans |
0.013 | - |
wild-type enzyme, aerobic conditions, presence of nitrate | Aspergillus nidulans |
0.018 | - |
wild-type enzyme, anaerobic conditions, presence of nitrate | Aspergillus nidulans |
0.019 | - |
wild-type enzyme, anaerobic conditions, presence of nitrate and ammonium | Aspergillus nidulans |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
nitrate + NADPH | - |
Aspergillus nidulans | nitrite + NADP+ | - |
? | |
nitrate + NADPH | enzyme is essential for reduction of nitrate to ammonia, under oxic conditions the enzyme is involved in nitrate assimilation, under anoxic conditions the enzyme is used for dissimilatory nitrate reduction, transcription regulation mechanism via ammonium, nitrate, and O2 concentrations, overview | Aspergillus nidulans | nitrite + NADP+ | - |
? |
Synonyms | Comment | Organism |
---|---|---|
nitrate reductase | - |
Aspergillus nidulans |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
NADPH | - |
Aspergillus nidulans |