Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | P46850 | - |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
(ribonucleotide)n-2',3'-cyclophosphate + H2O | - |
Escherichia coli | (ribonucleotide)n-3'-phosphate | - |
? | |
(ribonucleotide)n-3'-(5'-diphosphoguanosine) + 5'-hydroxy-(ribonucleotide)m | - |
Escherichia coli | (ribonucleotide)n+m + GMP | - |
? | |
5'-guanosyl [RNA ligase]-Ntau-phosphono-L-histidine + (ribonucleotide)n-3'-phosphate | - |
Escherichia coli | (ribonucleotide)n-3'-(5'-diphosphoguanosine) + [RNA ligase]-L-histidine | - |
? | |
GTP + [RNA ligase]-L-histidine | - |
Escherichia coli | 5'-guanosyl [RNA ligase]-Ntau-phosphono-L-histidine + diphosphate | - |
? |
General Information | Comment | Organism |
---|---|---|
physiological function | RtcB ligates 3'-monophosphate and 5'-OH ends and has an intrinsic 2',3'-cyclic phosphodiesterase activity. The 2',3'-cyclic phosphodiesterase and ligase reactions both require manganese and are abolished by mutation of the RtcB active site. RtcB executes a unique two-step pathway of strand joining whereby the 2',3'-cyclic phosphodiester end is hydrolyzed to a 3'-monophosphate, which is then linked to the 5'-OH end to form the splice junction. The energy for the 3'-phosphate ligase activity is provided by GTP | Escherichia coli |