“Rule of Six”: How Does the Sendai Virus RNA Polymerase Keep Count?

Abstract excerpt

The "rule of six" stipulates that the Paramyxovirus RNA polymerase efficiently replicates only viral genomes counting 6n + 0 nucleotides. Because the nucleocapsid proteins (N) interact with 6 nucleotides, an exact nucleotide-N match at the RNA 3'-OH end (3'-OH congruence) may be required for recognition of an active replication promoter. Alternatively, assuming that the six positions for the interaction of N with...

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