Activating Compound | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | required | Anabaena sp. | |
Mn2+ | required | Anabaena sp. |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
EDTA | complete inhibition, can be restored by addition of Mg2+ or Mn2+ | Anabaena sp. |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.8 | - |
D-fructose 6-phosphate | SPS-I | Anabaena sp. | |
1.1 | - |
D-fructose 6-phosphate | SPS-II | Anabaena sp. | |
1.3 | - |
UDP-glucose | SPS-I | Anabaena sp. | |
4.3 | - |
UDP-glucose | SPS-II | Anabaena sp. |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
46000 | - |
gel filtration | Anabaena sp. |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-alpha-D-glucose + D-fructose 6-phosphate | Anabaena sp. | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? | |
UDP-alpha-D-glucose + D-fructose 6-phosphate | Anabaena sp. 7119 | catalyzes the penultimate step of sucrose synthesis | UDP + sucrose 6-phosphate | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Anabaena sp. | - |
- |
- |
Anabaena sp. 7119 | - |
- |
- |
Purification (Comment) | Organism |
---|---|
partial, two forms of the enzyme identified, enzyme becomes extremely unstable during the course of purification | Anabaena sp. |
Source Tissue | Comment | Organism | Textmining |
---|
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.04 | - |
purified SPS-I | Anabaena sp. |
0.25 | - |
purified SPS-II | Anabaena sp. |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
ADP-glucose + D-fructose 6-phosphate | only SPS-I | Anabaena sp. | ADP + sucrose 6-phosphate | - |
? | |
ADP-glucose + D-fructose 6-phosphate | only SPS-I | Anabaena sp. 7119 | ADP + sucrose 6-phosphate | - |
? | |
GDP-glucose + D-fructose 6-phosphate | only SPS-I | Anabaena sp. | GDP + sucrose 6-phosphate | - |
? | |
GDP-glucose + D-fructose 6-phosphate | only SPS-I | Anabaena sp. 7119 | GDP + sucrose 6-phosphate | - |
? | |
UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Anabaena sp. | UDP + sucrose 6-phosphate | - |
? | |
UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Anabaena sp. | UDP + sucrose 6-phosphate | - |
? | |
UDP-alpha-D-glucose + D-fructose 6-phosphate | - |
Anabaena sp. 7119 | UDP + sucrose 6-phosphate | - |
? | |
UDP-alpha-D-glucose + D-fructose 6-phosphate | catalyzes the penultimate step of sucrose synthesis | Anabaena sp. 7119 | UDP + sucrose 6-phosphate | - |
? |
Subunits | Comment | Organism |
---|---|---|
monomer | 1 * 46000, gel filtration | Anabaena sp. |
Synonyms | Comment | Organism |
---|---|---|
More | two forms of enzyme identified, SPS-I and SPS-II differ in substrate specificity | Anabaena sp. |