Inhibitors | Comment | Organism | Structure |
---|---|---|---|
aminooxyacetic acid | 80% inhibition at 2 mM | Nicotiana tabacum | |
beta-Alanine | 30% inhibition at 2 mM | Nicotiana tabacum | |
gabaculine | 80% inhibition at 2 mM | Nicotiana tabacum | |
L-glutamine | 11% inhibition at 2 mM | Nicotiana tabacum | |
L-ornithine | 40% inhibition at 2 mM | Nicotiana tabacum | |
additional information | no or poor inhibition by proline and succinate | Nicotiana tabacum | |
Succinic semialdehyde | 67% inhibition at 2 mM | Nicotiana tabacum |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.24 | - |
pyruvate | pH 8.2, temperature not specified in the publication | Nicotiana tabacum | |
1.2 | - |
4-aminobutanoate | pH 8.2, temperature not specified in the publication | Nicotiana tabacum |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
mitochondrion | - |
Nicotiana tabacum | 5739 | - |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-aminobutanoate + pyruvate | Nicotiana tabacum | - |
succinate semialdehyde + L-alanine | - |
r | |
4-aminobutanoate + pyruvate | Nicotiana tabacum Samsun N.N. | - |
succinate semialdehyde + L-alanine | - |
r |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Nicotiana tabacum | - |
- |
- |
Nicotiana tabacum Samsun N.N. | - |
- |
- |
Purification (Comment) | Organism |
---|---|
the pyruvate-dependent GABA-T activity is separated from 2-oxoglutarate-dependent GABA-T activity, EC 2.6.1.19, by two steps of anion exchange chromatography, purification 1530fold | Nicotiana tabacum |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | - |
Nicotiana tabacum | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.17 | - |
purified enzyme, pH 8.2, temperature not specified in the publication | Nicotiana tabacum |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-aminobutanoate + pyruvate | - |
Nicotiana tabacum | succinate semialdehyde + L-alanine | - |
r | |
4-aminobutanoate + pyruvate | pyruvate-specific mitochondrial GABA-T | Nicotiana tabacum | succinate semialdehyde + L-alanine | - |
r | |
4-aminobutanoate + pyruvate | - |
Nicotiana tabacum Samsun N.N. | succinate semialdehyde + L-alanine | - |
r | |
4-aminobutanoate + pyruvate | pyruvate-specific mitochondrial GABA-T | Nicotiana tabacum Samsun N.N. | succinate semialdehyde + L-alanine | - |
r |
Synonyms | Comment | Organism |
---|---|---|
4-aminobutyrate transaminase | - |
Nicotiana tabacum |
gaba:pyruvate transaminase | - |
Nicotiana tabacum |
pyruvate-specific mitochondrial GABA-T | - |
Nicotiana tabacum |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8.2 | - |
assay at | Nicotiana tabacum |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
pyridoxal 5'-phosphate | - |
Nicotiana tabacum |