6.5.1.5: RNA 3'-terminal-phosphate cyclase (GTP)

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For detailed information about RNA 3'-terminal-phosphate cyclase (GTP), go to the full flat file.

Reaction

5'-guanosyl [RNA 3'-phosphate cyclase]-Ntau-phosphono-L-histidine

[RNA]-3'-ribonucleoside-3'-(5'-diphosphoguanosine)

Synonyms

Pf-Rtc, PF1549

ECTree

6 Ligases

6.5 Forming phosphoric-ester bonds

6.5.1 Ligases that form phosphoric-ester bonds (only sub-subclass identified to date)

6.5.1.5 RNA 3'-terminal-phosphate cyclase (GTP)

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Reaction

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Reaction on EC 6.5.1.5 - RNA 3'-terminal-phosphate cyclase (GTP)

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5'-guanosyl [RNA 3'-phosphate cyclase]-Ntau-phosphono-L-histidine + [RNA]-3'-(3'-phospho-ribonucleoside) = [RNA 3'-phosphate cyclase]-L-histidine + [RNA]-3'-ribonucleoside-3'-(5'-diphosphoguanosine)

(1b)

GTP + [RNA 3'-phosphate cyclase]-L-histidine = 5'-guanosyl [RNA 3'-phosphate cyclase]-Ntau-phosphono-L-histidine + diphosphate

(1a)

GTP + [RNA]-3'-(3'-phospho-ribonucleoside) = GMP + diphosphate + [RNA]-3'-(2',3'-cyclophospho)-ribonucleoside

overall reaction

[RNA]-3'-ribonucleoside-3'-(5'-diphosphoguanosine) = [RNA]-3'-(2',3'-cyclophospho)-ribonucleoside + GMP

(1c)