RNA-directed RNA polymerase L (Protein L) (Large structural protein) (Replicase) (Transcriptase) [Includes: RNA-directed RNA polymerase (EC 2.7.7.48); GTP phosphohydrolase (EC 3.6.1.-); GDP polyribonucleotidyltransferase (EC 2.7.7.88) (PRNTase); mRNA cap methyltransferase (mRNA (guanine-N(7)-)-methyltransferase) (G-N7-MTase) (mRNA (nucleoside-2'-O-)-methyltransferase) (N1-2'-O-MTase)]