obsolete GTP:coenzyme F420 guanyltransferase activity (obsolete GO:0052754)
OBSOLETE. Catalysis of the reaction: GTP + factor gamma-F420-2 + H+ = coenzyme F390-G + diphosphate.
GTP:coenzyme F420 guanylyltransferase activity
exact
coenzyme F390-G synthetase activity
exact