tokens: Mutational analyses showed that in-frame stop codons introduced into five of seven RNA 2 ORFs did not affect accumulation of progeny LIYV RNA 1 or RNA 2 , confirming that RNA 2 does not encode proteins necessary for LIYV RNA replication .
folded_tokens: mutational analysis show that in-frame stop codon introduce into five of seven rna 2 orf do not affect accumulation of progeny liyv rna 1 or rna 2 , confirm that rna 2 do not encode protein necessary for liyv rna replication .