文献类型： 外文期刊
作者： Chen, Ye 1 ; Sun, Jingchen 1 ; Tong, Xiong 1 ; Xu, Jian 1 ; Deng, Hongjuan 1 ; Jiang, Zhiguo 1 ; Jiang, Chengfeng 1 ; Dua 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Coll Anim Sci, Guangdong Prov Key Lab Agroanim Genom & Mol Breed
期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.574； 五年影响因子：2.466 ）
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收录情况： SCI
摘要： Porcine circovirus (PCV) is grouped into two types: PCV1 and PCV2. PCV1 is isolated from cultured cells and usually causes no clinical diseases in pigs. PCV2 is a pathogen of severe pig disease and a great threat to swine health and production. In our study, to investigate the codon usage bias of PCV, the genomic sequences of PCV1 and PCV2 were analyzed. The results showed that the codon usage bias of PCV was very low. An effective number of codons (ENC) plot analysis indicated that mutational pressure influences the codon usage bias of PCV. Neutrality plot analysis showed that mutation bias dominated over natural selection in shaping the codon usage bias of PCV1, but mutation bias and natural selection contributed equally to the codon usage bias of PCV2. Principal component analysis showed that different ORFs and dinucleotide patterns were also factors influencing the codon usage bias of PCV. Our study is helpful in understanding the codon usage pattern of PCV and the evolution of PCV.
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