Cloned (Comment) | Organism |
---|---|
sequence comparisons and phylogenetic analysis, recombinant expression of His6-tagged isozyme GS1beta1 in Escherichia coli strain BL21(DE3) and in strain JW3841-1, which is Gln-auxotrophic. Isozyme GmGS1beta1 can complement the Escherichia coli Gln-auxotrophic strain JW3841-1 effectively at 37°C | Glycine max |
sequence comparisons and phylogenetic analysis, recombinant expression of His6-tagged isozyme GS1gamma1 in Escherichia coli strain BL21(DE3) and in strain JW3841-1, which is Gln-auxotrophic. Isozyme GmGS1gamma1 is unable to complement the Escherichia coli Gln-auxotrophic strain JW3841-1 effectively at 37°C | Glycine max |
Protein Variants | Comment | Organism |
---|---|---|
additional information | isozyme GmGS1beta1 can complement the Escherichia coli Gln-auxotrophic strain JW3841-1 effectively at 37°C | Glycine max |
additional information | isozyme GmGS1gamma1 is unable to complement the Escherichia coli Gln-auxotrophic strain JW3841-1 effectively at 37°C. The lack of active GmGS1gamma1 production for the successful complementation at 37°C can be attributed to misfolding or conformational instability caused by increased temperature | Glycine max |
General Stability | Organism |
---|---|
MgCl2, MgCl2 /Glu, or MgCl2/ATP are effective in stabilizing the enzyme. Glu or ATP also stabilize the enzyme but to a lesser extent. NH4Cl accelerates the enzyme inactivation, even in the presence of MgCl2 | Glycine max |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
additional information | enzyme inactivation by ferric chloride reagent (0.2 M FeCl3, 0.12 M trichloroacetic acid, and 2.1% concentrated HCl). Enzyme oxidative inactivation by three different metal-catalyzed oxidation (MCO) systems, composed of air, FeCl3 and reducing agents (DTT, ascorbate or GSH), overview; enzyme inactivation by ferric chloride reagent (0.2 M FeCl3, 0.12 M trichloroacetic acid, and 2.1% concentrated HCl). Enzyme oxidative inactivation by three different metal-catalyzed oxidation (MCO) systems, composed of air, FeCl3 and reducing agents (DTT, ascorbate or GSH), overview | Glycine max |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
cytosol | - |
Glycine max | 5829 | - |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | required | Glycine max |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + L-glutamate + NH3 | Glycine max | - |
ADP + phosphate + L-glutamine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Glycine max | O82560 | - |
- |
Glycine max | Q9FUK4 | - |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
root nodule | - |
Glycine max | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + L-glutamate + NH3 | - |
Glycine max | ADP + phosphate + L-glutamine | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 40000, about, recombinant His6-tagged isozyme GS1beta1, SDS-PAGE, x * 39399, about, native isozyme, sequence calculation | Glycine max |
? | x * 40000, about, recombinant His6-tagged isozyme GS1gamma1, SDS-PAGE, x * 39399, about, native isozyme, sequence calculation | Glycine max |
Synonyms | Comment | Organism |
---|---|---|
glutamine synthetase cytosolic isozyme 1 | UniProt | Glycine max |
glutamine synthetase cytosolic isozyme 2 | UniProt | Glycine max |
GS1-2 | UniProt | Glycine max |
GS1beta1 | - |
Glycine max |
GS1gamma1 | - |
Glycine max |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
37 | - |
assay at | Glycine max |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
additional information | - |
the instability of the GmGS1gamma1 in vitro probably reflects the in vivo situation | Glycine max |
additional information | - |
Val161 in GS1beta1 is the key residue responsible for the heat stability | Glycine max |
35 | 60 | GmGS1beta1 retains 58% of its original activity after 10 min incubation at 52°C and still about 40% of activity after 10 min at 57°C, thermal inactivation profiles of GmGS1beta1, overview | Glycine max |
35 | 60 | GmGS1gamma1 only retains less than 39% of the initial activity after 10 min incubation at 52°C and is inactivated rapidly above 57°C, thermal inactivation profiles of GmGS1gamma1, overview | Glycine max |
50 | - |
50% activity remaining | Glycine max |
60 | - |
50% activity remaining | Glycine max |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7.5 | - |
assay at | Glycine max |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ATP | - |
Glycine max |
General Information | Comment | Organism |
---|---|---|
additional information | Val161 in GS1beta1 is the key residue responsible for the heat stability | Glycine max |
physiological function | glutamine synthetase in nodule cytosol plays a major role in the assimilation of the ammonium produced by biological nitrogen fixation | Glycine max |