Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | required, Mg2+ is an integral component of the enzyme glutamine synthetase having both a structural and a catalytic role. Mg2+ is relevant for the posttranslational regulation of the enzyme | Zea mays |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + L-glutamate + NH3 | Zea mays | - |
ADP + phosphate + L-glutamine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Zea mays | - |
cv. Susann | - |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | GS activity is analyzed dependent on different leaf developmental stages, with or without Mg2+ starvation, overview | Zea mays | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ATP + L-glutamate + NH3 | - |
Zea mays | ADP + phosphate + L-glutamine | - |
? |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ATP | - |
Zea mays |
General Information | Comment | Organism |
---|---|---|
malfunction | the total capacity of the enzyme-mediated ligation of free ammonium and glutamate to form glutamine in the leaves of maize plants is not impaired upon severe magnesium starvation. The total GS-mediated primary or secondary assimilation of free NH4+ is not a limiting enzymatic reaction under Mg-deficiency and thus cannot be accountable for the observed restriction of plant growth and productivity in Mg-deficient maize, phenotype, overview | Zea mays |
physiological function | glutamine synthetase is one of the key enzymes in nitrogen assimilation, ligating-free ammonium to glutamate to form glutamine and it is therefore crucial for plant growth and productivity | Zea mays |