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Hydrogen Bond Variations of Influenza A Viruses During Adaptation in Human.

Abstract：

:Many host specific mutations have been detected in influenza A viruses (IAVs). However, their effects on hydrogen bond (H-bond) variations have rarely been investigated. In this study, 60 host specific sites were identified in the internal proteins of avian and human IAVs, 27 of which contained mutations with effects on H-bonds. Besides, 30 group specific sites were detected in HA and NA. Twenty-six of 36 mutations existing at these group specific sites caused H-bond loss or formation in at least one subtype. The number of mutations in isolations of 2009 pandemic H1N1, human-infecting H5N1 and H7N9 varied. The combinations of mutations and H-bond changes in these three subtypes of IAVs were also different. In addition, the mutations in isolations of H5N1 distributed more scattered than those in 2009 pandemic H1N1 and H7N9. Eight wave specific mutations in isolations of the fifth H7N9 wave were also identified. Three of them, R140K in HA, Y170H in NA, and R340K in PB2, were capable of resulting in H-bond loss. As mentioned above, these host or group or wave specific H-bond variations provide us with a new field of vision for understanding the changes of structural features in the human adaptation of IAVs.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Luo J,Deng L,Ding X,Quan L,Wu A,Jiang T

doi

10.1038/s41598-017-14533-3

subject

Has Abstract

pub_date

2017-10-30 00:00:00

pages

14295

issue

1

issn

2045-2322

pii

10.1038/s41598-017-14533-3

journal_volume

7

pub_type

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