Proteinquakes in the evolution of influenza virus hemagglutinin (A/H1N1) under opposing migration and vaccination pressures.

Abstract:

:Influenza virus contains two highly variable envelope glycoproteins, hemagglutinin (HA) and neuraminidase (NA). Here we show that, while HA evolution is much more complex than NA evolution, it still shows abrupt punctuation changes linked to punctuation changes of NA. HA exhibits proteinquakes, which resemble earthquakes and are related to hydropathic shifting of sialic acid binding regions. HA proteinquakes based on shifting sialic acid interactions are required for optimal balance between the receptor-binding and receptor-destroying activities of HA and NA for efficient virus replication. Our comprehensive results present a historical (1945-2011) panorama of HA evolution over thousands of strains and are consistent with many studies of HA and NA interactions based on a few mutations of a few strains.

journal_name

Biomed Res Int

authors

Phillips JC

doi

10.1155/2015/243162

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

243162

eissn

2314-6133

issn

2314-6141

journal_volume

2015

pub_type

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