Activating Compound | Comment | Organism | Structure |
---|---|---|---|
ascorbate | activates | Asterias rubens | |
dithiothreitol | activates | Asterias rubens | |
glutathione | activates | Asterias rubens | |
additional information | no activation by non-ionic detergents | Asterias rubens |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
1,10-phenanthroline | - |
Asterias rubens | |
azide | - |
Asterias rubens | |
Ca2+ | 0.5 mM, 12% inhibition | Asterias rubens | |
CHAPS | 15 mM, complete inhibition | Asterias rubens | |
cholic acid | 10 mM, 89% inhibition | Asterias rubens | |
decylglucopyranoside | 5 mM, 22% inhibition | Asterias rubens | |
ferrozine | - |
Asterias rubens | |
Hg2+ | slight inhibition | Asterias rubens | |
KCN | - |
Asterias rubens | |
Mn2+ | 0.5 mM, slight inhibition | Asterias rubens | |
additional information | not inhibited by increased ionic strength, no inhibition by 1 M NaCl | Asterias rubens | |
octylglucopyranoside | 30 mM, 48% inhibition | Asterias rubens | |
Tiron | - |
Asterias rubens | |
Zwittergent 3-12 | 5 mM, 40% inhibition | Asterias rubens |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.018 | - |
CMP-N-acetylneuraminate | 25°C | Asterias rubens |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Iron | the enzyme contains a non-haem iron cofactor | Asterias rubens |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Asterias rubens | - |
- |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
alimentary canal | - |
Asterias rubens | - |
body wall | - |
Asterias rubens | - |
gonad | - |
Asterias rubens | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
CMP-N-acetylneuraminate + NADH + O2 | - |
Asterias rubens | CMP-N-glycoloylneuraminate + NAD+ + H2O | - |
? |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
25 | 33 | - |
Asterias rubens |
Temperature Minimum [°C] | Temperature Maximum [°C] | Comment | Organism |
---|---|---|---|
15 | 43 | 15°C: about 55% of maximal activity, 43°C: about 30% of maximal activity | Asterias rubens |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
6 | 6.4 | - |
Asterias rubens |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
5.6 | 6.8 | about 60% of maximal activity at pH 5.6 and pH 6.8 | Asterias rubens |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
NADH | most effective cofactor, optimal activity at 0.4 mM NADH, higher concentrations are slightly inhibitory | Asterias rubens |