. "Catalysis of the reaction: nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1); uses an RNA template." . . "transcriptase" . "RNA-directed RNA polymerase activity" . "RDRP" . "3D polymerase activity" . "nucleoside-triphosphate:RNA nucleotidyltransferase (RNA-directed)" . "PB1 proteins" . "PB2 proteins" . "phage f2 replicase" . "polymerase L" . "Q-beta replicase activity" . "ribonucleic acid replicase activity" . "ribonucleic acid-dependent ribonucleate nucleotidyltransferase activity" . "ribonucleic acid-dependent ribonucleic acid polymerase activity" . "ribonucleic replicase activity" . "ribonucleic synthetase activity" . "RNA nucleotidyltransferase (RNA-directed) activity" . "RNA replicase activity" . "RNA synthetase activity" . "RNA-dependent ribonucleate nucleotidyltransferase activity" . "RNA-dependent RNA polymerase activity" . "RNA-dependent RNA replicase activity" . . .