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- W2103705071 abstract "The poliovirus-encoded, membrane-associated polypeptide 2C is believed to be required for initiation and elongation of RNA synthesis. We have expressed and purified recombinant, histidine-tagged 2C and examined its ability to bind to the first 100 nucleotides of the poliovirus 5' untranslated region of the positive strand and its complementary 3'-terminal negative-strand RNA sequences. Results presented here demonstrate that the 2C polypeptide specifically binds to the 3'-terminal sequences of poliovirus negative-strand RNA. Since this region is believed to form a stable cloverleaf structure, a number of mutations were constructed to examine which nucleotides and/or structures within the cloverleaf are essential for 2C binding. Binding of 2C to the 3'-terminal cloverleaf of the negative-strand RNA is greatly affected when the conserved sequence, UGUUUU, in stem a of the cloverleaf is altered. Mutational studies suggest that interaction of 2C with the 3'-terminal cloverleaf of negative-strand RNA is facilitated when the sequence UGUUUU is present in the context of a double-stranded structure. The implication of 2C binding to negative-strand RNA in viral replication is discussed." @default.
- W2103705071 created "2016-06-24" @default.
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- W2103705071 date "1997-12-01" @default.
- W2103705071 modified "2023-10-14" @default.
- W2103705071 title "Poliovirus-encoded 2C polypeptide specifically binds to the 3'-terminal sequences of viral negative-strand RNA" @default.
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- W2103705071 doi "https://doi.org/10.1128/jvi.71.12.9570-9578.1997" @default.
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