Evolution of Codon Usage Bias in Henipaviruses Is Governed by Natural Selection and Is Host-Specific
Hendra virus (HeV) and Nipah virus (NiV) are among a group of emerging -borne paramyxoviruses that have crossed their species-barrier several times by infecting several hosts with a high fatality rate in . Despite the fatal nature of their infection, a comprehensive study to explore their evolution...
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Veröffentlicht in: | Viruses 2018-11, Vol.10 (11), p.604 |
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Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Hendra virus (HeV) and Nipah virus (NiV) are among a group of emerging
-borne paramyxoviruses that have crossed their species-barrier several times by infecting several hosts with a high fatality rate in
. Despite the fatal nature of their infection, a comprehensive study to explore their evolution and adaptation in different hosts is lacking. A study of codon usage patterns in henipaviruses may provide some fruitful insight into their evolutionary processes of synonymous codon usage and host-adapted evolution. Here, we performed a systematic evolutionary and codon usage bias analysis of henipaviruses. We found a low codon usage bias in the coding sequences of henipaviruses and that natural selection, mutation pressure, and nucleotide compositions shapes the codon usage patterns of henipaviruses, with natural selection being more important than the others. Also, henipaviruses showed the highest level of adaptation to
of the genus
in the codon adaptation index (CAI), relative to the codon de-optimization index (RCDI), and similarity index (SiD) analyses. Furthermore, a comparison to recently identified henipa-like viruses indicated a high tRNA adaptation index of henipaviruses for
, mainly due to F, G and L proteins. Consequently, the study concedes the substantial emergence of henipaviruses in
, particularly when paired with frequent exposure to direct/indirect
excretions. |
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ISSN: | 1999-4915 1999-4915 |
DOI: | 10.3390/v10110604 |