The mutation rates to a viable (monoclonal antibody-resistant mutant) genotype of wild-type influenza (A/Victoria/3/75; H3N2) virus or its mutator variant strains have been previously determined. In order to estimate the mutation rates per nucleotide position, the sequence alterations present in 44 mutants isolated from either the wild-type or the mutator strain have been determined. These mutants were selected with either of two non-overlapping, haemagglutinin-specific, monoclonal antibodies (2G10 and p7). Most of the protein changes were identified as substitutions of large, charged amino acids for glycine residues, as the result of G to A transitions. Particularly interesting amino acid changes, not previously reported, were observed in the p7 monoclonal antibody-specific mutants, in which only Gly to Ser and Gly to Asp at position 226 were detected. The identification of the nucleotide substitutions responsible for the phenotype has allowed the calculation of approximate values for the total mutation rates at these positions.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error