Characterization of Mobile Staphylococcus equorum Plasmids Isolated from Fermented Seafood That Confer Lincomycin Resistance

PLoS One

Jong-Hoon Lee¹  Do-Won Jeong² 

[1] Department of Food Science and Biotechnology, Kyonggi University, Suwon, 443–760, Republic of Korea;Department of Food Science and Biotechnology, Shinansan University, Ansan, 425–792, Republic of Korea

关键词: Repeated sequences;    Sequence motif analysis;    Antibiotic resistance;    DNA sequence analysis;    Antibiotics;    Staphylococcus;    Nucleotide sequencing;    Sequence analysis;   

DOI  :  10.1371/journal.pone.0140190

学科分类：医学（综合）

来源: Public Library of Science

【 摘 要 】

The complete nucleotide sequences of lincomycin-resistance gene (lnuA)-containing plasmids in Staphylococcus equorum strains isolated from the high-salt-fermented seafood jeotgal were determined. These plasmids, designated pSELNU1–3, are 2638-bp long, have two polymorphic sites, and encode typical elements found in plasmids that replicate via a rolling-circle mechanism including the replication protein gene (rep), a double-stranded origin of replication, a single-stranded origin of replication, and counter-transcribed RNA sequence, as well as lnuA. Plasmid sequences exhibit over 83% identity to other Staphylococcus plasmids that harbor rep and lnuA genes. Further, three pairs of identified direct repeats may be involved in inter-plasmid recombination. One plasmid, pSELNU1, was successfully transferred to other Staphylococcus species, Enterococcus faecalis, and Tetragenococcus halophilus in vitro. Antibiotic susceptibility of the transconjugants was host-dependent, and transconjugants maintained a lincomycin resistance phenotype in the absence of selective pressure over 60 generations.

【 授权许可】

CC BY