EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
2.7.7.69 | GDP-beta-L-galactose + phosphate |
preferred substrate |
Arabidopsis thaliana |
GDP + beta-L-galactose 1-phosphate |
- |
r |
2.7.7.69 | GDP-beta-L-galactose + phosphate |
enzyme guanylylates a conserved active site His residue with GDP-L-galactose, forming L-galactose 1-phosphate for vitamin C synthesis, and regeneration of the enzyme with phosphate to form GDP |
Arabidopsis thaliana |
GDP + beta-L-galactose 1-phosphate |
- |
r |
2.7.7.69 | GDP-beta-L-galactose + phosphate |
reaction proceeds through a covalent guanylated histidine residue within the histidine triad motif |
Arabidopsis thaliana |
GDP + beta-L-galactose 1-phosphate |
- |
r |
2.7.7.69 | GDP-beta-L-gulose + phosphate |
- |
Arabidopsis thaliana |
alpha-L-gulose 1-phosphate + GDP |
- |
r |
2.7.7.69 | more |
no substrates: UDP-alpha-D-glucose, UDP-alpha-D-galactose, or ADP-alpha-D-glucose |
Arabidopsis thaliana |
? |
- |
? |
2.7.7.69 | more |
poor reactivity of hexose 1-phosphates as acceptors |
Arabidopsis thaliana |
? |
- |
? |
2.7.7.69 | UDP-alpha-D-galactose + phosphate |
0.1% of the activity with GDP-L-galactose |
Arabidopsis thaliana |
alpha-D-galactose 1-phosphate + UDP |
- |
r |
2.7.7.69 | UDP-alpha-D-galactose + phosphate |
0.2% of the activity with GDP-L-galactose |
Arabidopsis thaliana |
alpha-D-galactose 1-phosphate + UDP |
- |
r |
2.7.7.69 | UDP-alpha-D-glucose + phosphate |
0.3% of the activity with GDP-L-galactose |
Arabidopsis thaliana |
alpha-D-glucose 1-phosphate + UDP |
- |
r |
2.7.7.69 | UDP-alpha-D-glucose + phosphate |
2.1% of the activity with GDP-L-galactose |
Arabidopsis thaliana |
alpha-D-glucose 1-phosphate + UDP |
- |
r |