a cytidine in mRNA + H2O + H(+) = a uridine in mRNA + NH4(+)
a cytidine in mrna + h2o + h(+) = a uridine in mrna + nh4(+)
a cytidine in mRNA + H2O + H(+) = a uridine in mRNA + NH4(+)
a cytidine in mrna + h2o + h(+) = a uridine in mrna + nh4(+)