Foot-and-mouth disease virus low-fidelity polymerase mutants are attenuated.

Abstract excerpt

Previous studies have shown that RNA viruses can be attenuated by either increased or decreased viral polymerase replication fidelity. Although foot-and-mouth disease virus (FMDV) high-fidelity RNA-dependent RNA polymerase (RdRp) variants with an attenuated phenotype have been isolated using mutagens, no FMDV mutant with a low-fidelity polymerase has been documented to date. Here, we describe the generation of...

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