文献类型： 外文期刊

作者： Man, Chaolai ² ; Yu, Xiaolong ¹ ;

作者机构： 1.Heilongjiang Acad Agr Sci, Inst Anim Sci, Harbin 150086, Heilongjiang, Peoples R China

2.Harbin Normal Univ, Key Lab Mol Cytogenet & Genet Breeding Heilongjia, Coll Life Sci & Technol, Harbin 150025, Peoples R China

关键词： Cloning;N gene;TGEV;Dog

期刊名称：INDIAN JOURNAL OF VIROLOGY （ 影响因子：0.364； 五年影响因子：0.287 ）

ISSN： 0970-2822

年卷期： 2012 年 23 卷 3 期

页码：

收录情况： SCI

摘要： Transmissible gastroenteritis virus (TGEV) is the etiological agent of TGE, and dogs are potential carriers of TGEV. In this study, genomic RNA were extracted from TGEV designated HYM-09 isolated from dog naturally infected with TGEV. The nucleocapsid (N) gene of HYM-09 was amplified by RT-PCR and cloned into pMD18-T vector. The N gene cDNA was sequenced and encompassed an open reading frame of 1,149 nucleotides, encoding a 382-amino acids protein. Sequence analyses of the N genes were performed, including homologous comparison, phylogenetic tree analysis and residue substitution analysis. The results showed that there existed some unique mutations in the HYM-09 isolate N gene, but HYM-09 N gene shared over 96 % homologous identities compared with 12 TGEV reference strains derived from other regions or countries respectively. The phylogenetic tree analysis revealed that the HYM-09 branched into the most strains group. This study shows that the nucleotide sequence analysis can form a base or further study on the mutation trend of non-porcine TGEV.