Table 1 The basic information of enzymes involved in nitrogen metabolism of plants
Enzyme | Abbreviation | Encoding genes | Function |
|---|---|---|---|
Nitrate reductase | NR | 5 | Reduce nitrate ion into nitrite ion |
Nitrite reductase | NiR | 30 | Further reduce nitrite into ammonium ion |
Glutamine synthetase | GS | 49 | Involve in GOGAT pathway |
Glutamine oxoglutarate aminotransferase | GOGAT | 15 | Involve in GOGAT pathway |
Glutamate dehydrogenase | GDH | 3 | Dehydrogenate α-ketoglutarate |
Aspartate aminotransferase | AST | 13 | Catabolise glutamate into aspartate |
Asparagine synthetase | AS | 4 | Aspartate is converted into asparagine |