This family consists of several Mitovirus RNA-dependent RNA polymerase proteins. The family also contains fragment matches in the mitochondria of Arabidopsis thaliana.

1: Evolutionary relationships among putative RNA-dependent RNA polymerases encoded by a mitochondrial virus-like RNA in the Dutch elm disease fungus, Ophiostoma novo-ulmi, by other viruses and virus-like RNAs and by the Arabidopsis mitochondrial genome. Hong Y, Cole TE, Brasier CM, Buck KW; Virology 1998;246:158-169. PMID:9657003