Activating Compound | Comment | Organism | Structure |
---|---|---|---|
DTT | - |
Artemia salina |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.84 | - |
diphosphate | pH 5.9, 40°C | Artemia salina | |
1.06 | - |
Gp4G | pH 5.9, 40°C | Artemia salina | |
2.2 | - |
GTP | pH 5.9, 40°C | Artemia salina |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
mitochondrion | small amount of activity | Artemia salina | 5739 | - |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Mg2+ | required for the forward reaction | Artemia salina |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
GTP + GTP | Artemia salina | - |
diphosphate + P1,P4-bis(5'-guanosyl)tetraphosphate | - |
r |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Artemia salina | - |
brine shrimp | - |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
2 GTP = diphosphate + P1,P4-bis(5'-guanosyl) tetraphosphate | mechanism | Artemia salina |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
embryo | encysted, yolk platelets of | Artemia salina | - |
platelet | of yolk | Artemia salina | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
GDP + P1,P4-bis(5'-guanosyl)tetraphosphate | - |
Artemia salina | P1,P3-bis(5'-guanosyl)triphosphate | - |
r | |
GTP + GTP | - |
Artemia salina | P1,P4-bis(5'-guanosyl)tetraphosphate + diphosphate | i.e. GP4G | r | |
GTP + GTP | - |
Artemia salina | diphosphate + P1,P4-bis(5'-guanosyl)tetraphosphate | - |
r | |
additional information | either 2 enzymes are present in guanosine-triphosphate guanylyltransferase preparations or 2 catalytic sites exist on one protein, one for the synthesis of P1,P3-bis(5'-guanosyl)triphosphate and one for the synthesis of P1,P4-bis(5'-guanosyl)tetraphosphate | Artemia salina | ? | - |
? |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
5.9 | 6 | - |
Artemia salina |