Article
Codon bias and frequency-dependent selection on the hemagglutinin epitopes of influenza A virus.
Proceedings of the National Academy of Sciences of the United States of America - 10 Jun 2003
Plotkin Joshua B, Dushoff Jonathan
Abstract excerpt
Although the surface proteins of human influenza A virus evolve rapidly and continually produce antigenic variants, the internal viral genes acquire mutations very gradually. In this paper, we analyze the sequence evolution of three influenza A genes over the past two decades. We study codon usage as a discriminating signature of gene- and even residue-specific diversifying and purifying selection. Nonrandom...
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