July 7, 2019  |  

Molecular and genomic features of Mycobacterium bovis strain 1595 isolated from Korean cattle.

Authors: Kim, Narae and Jang, Yunho and Kim, Jin Kyoung and Ryoo, Soyoon and Kwon, Ka Hee and Kim, Miso and Kang, Shin Seok and Byeon, Hyeon Seop and Lee, Hee Soo and Lim, Young-Hee and Kim, Jae-Myung

The aim of this study was to investigate the molecular characteristics and to conduct a comparative genomic analysis of Mycobacterium (M.) bovis strain 1595 isolated from a native Korean cow. Molecular typing showed that M. bovis 1595 has spoligotype SB0140 with mycobacterial interspersed repetitive units-variable number of tandem repeats typing of 4-2-5-3-2-7-5-5-4-3-4-3-4-3, representing the most common type of M. bovis in Korea. The complete genome sequence of strain 1595 was determined by single-molecule real-time technology, which showed a genome of 4351712 bp in size with a 65.64% G + C content and 4358 protein-coding genes. Comparative genomic analysis with the genomes of Mycobacterium tuberculosis complex strains revealed that all genomes are similar in size and G + C content. Phylogenetic analysis revealed all strains were within a 0.1% average nucleotide identity value, and MUMmer analysis illustrated that all genomes showed positive collinearity with strain 1595. A sequence comparison based on BLASTP analysis showed that M. bovis AF2122/97 was the strain with the greatest number of completely matched proteins to M. bovis 1595. This genome sequence analysis will serve as a valuable reference for improving understanding of the virulence and epidemiologic traits among M. bovis isolates in Korea.

Journal: Journal of veterinary science
DOI: 10.4142/jvs.2017.18.S1.333
Year: 2017

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