Cited by 320Evolution and Genetic DynamicsInfluenza Virus Research StudiesGenomics and Phylogenetic Studies

Positive Darwinian evolution in human influenza A viruses.

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Fitch, W M, Leiter, J M, Li, X Q, Palese, P·1991·Proceedings of the National Academy of Sciences

Abstract

We earlier suggested that type A human influenza virus genes undergo positive Darwinian selection through immune surveillance. This requires more favorable amino acid replacements fixed in antigenic sites among the surviving lineages than among the extinct lineages. We now show that viral hemagglutinins fix proportionately more amino acid replacements in antigenic sites in the trunk of the evolutionary tree (survivors) than in the branches (nonsurvivors), demonstrating that type A human influenza virus is undergoing positive Darwinian evolution. The hemagglutinin gene is evolving 3 times faster than the nonstructural gene and the average age of the sampled nonsurvivors is only 1.6 years, so that extinction is not only common but rapid.

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Crossref · 10.1073/pnas.88.10.4270

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Research works printed but not linked: 1

  1. Ratner V. A., Kolchanov N. A., Omel'ianchuk L. V. Filogeneticheskii analiz genov virusa grippa. Sootnoshenie adaptivnosti i neitral'nosti. Genetika. 1989 Aug;25(8):1499–1507. [PubMed] [Google Scholar]

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Authors
Fitch, W. M., Leiter, J. M., Li, X. Q., & Palese, P.
Affiliations
University of California, Irvine (US)
Venue
Proceedings of the National Academy of Sciences
Published
1991-05-15
Volume
88
Issue
10
Pages
4270-4274
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2019548301
Cited by
320
References
26
Citations by year
2026: 6 · 2025: 3 · 2024: 3 · 2023: 3 · 2022: 5 · 2021: 12 · 2020: 6 · 2019: 8 · 2018: 10 · 2017: 5 · 2016: 7 · 2015: 13 · 2014: 8 · 2013: 14 · 2012: 10
FWCI
5.77
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (8796183)
  • National Institutes of Health (5r01ai011823-30)
  • National Institute of Allergy and Infectious Diseases (AI-11823)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
Keywords
influenza A virus, positive selection, hemagglutinin gene, antigenic determinants, immune surveillance, viral evolution, amino acid substitutions, evolutionary rates, non-structural genes
MeSH terms
Amino Acid Sequence, Biological Evolution, Genes, Viral, Hemagglutinins, Viral, Molecular Sequence Data, Influenza A virus

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