Complete sequence and phylogenetic analysis of a porcine sapovirus strain isolated from western China

文献类型： 外文期刊

第一作者： Liu, Wei

作者： Liu, Wei;Yang, Bin;Wang, Enli;Liu, Jixing;Lan, Xi;Wang, Enli

作者机构：

关键词： Porcine Sapovirus;Complete genome;Sequence analysis;Northwest China

期刊名称：VIRUS GENES （ 影响因子：2.332； 五年影响因子：2.0 ）

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年卷期：

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收录情况： SCI

摘要： Sapovirus (SaV) is a type of calicivirus that can cause acute viral gastroenteritis in humans and animals. SaVs have been found in several mammalian species, including humans, pigs, minks, dogs, and bats. Porcine sapovirus (PoSaV) was first identified in 1980 in the United States and has been found to be circulating throughout China in recent years. In this study, the complete genomic characterization of PoSaV CH430, first found in west China, was reported and analyzed. The genome was 7,342 bp excluding the 30 nt poly(A) tail at the 3' terminus and comprised two major open reading frames. Comprehensive evolutionary and phylogenetic analyses indicated that the CH430 strain belongs to genotype III SaVs. However, this particular isolate and DG24 strain occupied an independent branch of the phylogenetic tree we generated, indicating that they could form a separate subgenotype in the near future. We predicted the cleavage sites for the ORF1 polyprotein located at Q(56)/G(57), Q(310)/A(311), E-649/A(650), E-934/A(935), E-1047/G(1048), and E-1712/A(1713), separately. This is the first PoSaV strain isolated from western China to be fully sequenced and characterized. It provided a reliable experimental basis for studying the genetic nature of emerging PoSaVs.

分类号： R37

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