EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
1.14.18.2 | CMP-N-acetylneuraminate + 2 ferrocytochrome b5 + O2 + 2 H+ |
- |
Sus scrofa |
CMP-N-glycoloylneuraminate + 2 ferricytochrome b5 + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + 2 ferrocytochrome b5 + O2 + 2 H+ |
- |
Felis catus |
CMP-N-glycoloylneuraminate + 2 ferricytochrome b5 + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + 2 ferrocytochrome b5 + O2 + 2 H+ |
- |
Chlorocebus aethiops |
CMP-N-glycoloylneuraminate + 2 ferricytochrome b5 + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + 6,7-dimethyl-5,6,7,8-tetrahydrobiopterin + O2 |
less effectiove than NADH or NADPH |
Sus scrofa |
CMP-N-glycoloylneuraminate + ? |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + ascorbic acid + O2 |
ascorbate is ineffective |
Mus musculus |
CMP-N-glycoloylneuraminate + dehydroascorbate + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + ascorbic acid + O2 |
less effective than NADH or NADPH |
Sus scrofa |
CMP-N-glycoloylneuraminate + dehydroascorbate + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + ferrocytochrome b5 + O2 |
- |
Mus musculus |
CMP-N-glycoloylneuraminate + ferricytrochrome b5 + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + ferrocytochrome b5 + O2 |
- |
Asterias rubens |
CMP-N-glycoloylneuraminate + ferricytrochrome b5 + H2O |
- |
? |
1.14.18.2 | CMP-N-acetylneuraminate + ferrocytochrome b5 + O2 |
binding of CMP-N-acetylneuraminate to CMP-N-acetylneuraminate hydroxylase changes conformation of the enzyme so as to construct a recognition site for cytochrome b5, followed by the formation of a ternary complex through this domain. Then the transport of electrons from NAD(P)H to the enzyme through cytochrome b5 takes place, CMP-N-acetylneuraminate is converted to CMP-N-glycoloylneuraminic acid and finally the ternary complex dissociates into its components to release CMP-N-glycoloylneuraminic acid |
Mus musculus |
CMP-N-glycoloylneuraminate + ferricytrochrome b5 + H2O |
- |
? |
1.14.18.2 | 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 |
- |
? |