label: RNA-dependent RNA polymerase activity
label_lc: rna-dependent rna polymerase activity
description: "Catalysis of the reaction: nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1); uses an RNA template, i.e. the catalysis of RNA-template-directed extension of the 3'-end of an RNA strand by one nucleotide at a time."