General Stability | Organism |
---|---|
after each cycle of freezing and thawing, 25% loss of activity | Asterias rubens |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
1,10-phenanthroline | - |
Asterias rubens | |
2,2'-dipyridyl | - |
Asterias rubens | |
ferrozine | - |
Asterias rubens |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
NaCl | maximal 3.5fold stimulation at 100 mM | Asterias rubens |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Asterias rubens | - |
- |
- |
Purification (Comment) | Organism |
---|---|
- |
Asterias rubens |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
gonad | - |
Asterias rubens | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.00093 | - |
- |
Asterias rubens |
Storage Stability | Organism |
---|---|
-80 C, very stable | Asterias rubens |
4°C, 48 h, 10% loss of activity | Asterias rubens |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
CMP-N-acetylneuraminate + ferrocytochrome b5 + O2 | evidence for the formation of a ternary complex of hydroxylase, CMP-Neu5Ac and cytochrome b5 | Asterias rubens | CMP-N-glycoloylneuraminate + ferricytrochrome b5 + H2O | - |
? | |
CMP-N-acetylneuraminate + NADH + O2 | - |
Asterias rubens | CMP-N-glycoloylneuraminate + NAD+ + H2O | - |
? |
Subunits | Comment | Organism |
---|---|---|
More | a main protein of 76000 da and a minor protein of 64000 Da correlates with CMP-neu5Ac hydroxylase activity | Asterias rubens |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
4 | - |
48 h, 10% loss of activity | Asterias rubens |
25 | - |
2 h, 50% loss of activity | Asterias rubens |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
ferrocytochrome b5 | evidence for the formation of a ternary complex of hydroxylase, CMP-Neu5Ac and cytochrome b5 | Asterias rubens | |
NADH | - |
Asterias rubens |