Analysing codon usage bias of cyprinid herpesvirus 3 and adaptation of this virus to the hosts
文献类型: 外文期刊
作者: Ma, Y. P. 1 ; Liu, Z. X. 1 ; Hao, L. 1 ; Ma, J. Y. 1 ; Liang, Z. L. 1 ; Li, Y. G. 2 ; Ke, H. 1 ;
作者机构: 1.Guangdong Acad Agr Sci, Guangdong Publ Lab Vet Publ Hlth, Inst Anim Hlth, Guangzhou 510640, Guangdong, Peoples R China
2.South China Agr Univ, Guangzhou, Guangdong, Peoples R China
关键词: codon usage bias;cyprinid herpesvirus 3;evolution;host
期刊名称:JOURNAL OF FISH DISEASES ( 影响因子:2.767; 五年影响因子:2.689 )
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收录情况: SCI
摘要: The codon usage patterns of open reading frames (ORFs) in cyprinid herpesvirus 3 (CyHV-3) have been investigated in this study. The high correlation between GC(12)% and GC(3)% suggests that mutational pressure rather than natural selection is the main factor that determines the codon usage and base component in the CyHV-3, while mutational pressure effect results from the high correlation between GC(3)% and the first principal axis of principle component analysis (Axis 1) on the relative synonymous codon usage (RSCU) value of the viral functional genes. However, the interaction between the absolute codon usage bias and GC(3)% suggests that other selections take part in the formation of codon usage, except for the mutational pressure. It is noted that the similarity degree of codon usage between the CyHV-3 and goldfish, Carassius auratus (L.), is higher than that between the virus and common carp, Cyprinus carpioL., suggesting that the goldfish plays a more important role than the common carp in codon usage pattern of the CyHV-3. The study of codon usage in CyHV-3 can provide some evidence about the molecular evolution of the virus. It can also enrich our understanding about the relationship between the CyHV-3 and its hosts by analysing their codon usage patterns.
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