title: Prediction of Type II Toxin-Antitoxin Loci in Klebsiella pneumoniae Genome Sequences.
abstract: Klebsiella pneumoniae is an increasingly important bacterial pathogen to human. This Gram-negative bacterium species has become a serious concern due to its dramatic increase in the levels of multiple antibiotic resistances, particularly to carbapenems. The toxin-antitoxin (TA) system has recently been reported to be involved in the formation of drug-tolerant persister cells. The type II TA system is composed of a stable toxin protein and a relatively unstable antitoxin protein that is able to inhibit the toxin. Here, we examine the type II TA locus distribution and compare the TA diversity throughout ten completely sequenced K. pneumoniae genomes by using bioinformatics approaches. Two hundred and twelve putative type II TA loci were identified in 30 replicons of these K. pneumoniae strains. The amino acid sequence similarity-based grouping shows that these loci distribute differently not only among different K. pneumoniae strains isolated from diverse sources, but also between their chromosomes and plasmids.
authors.affiliation: State Key Laboratory for Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, 200030, China.
authors.forename: Yi-Qing
authors.initials: YQ
authors.lastname: Wei
authors.affiliation: State Key Laboratory for Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, 200030, China.
authors.forename: De-Xi
authors.initials: DX
authors.lastname: Bi
authors.affiliation: State Key Laboratory for Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, 200030, China. dqwei@sjtu.edu.cn.
authors.forename: Dong-Qing
authors.initials: DQ
authors.lastname: Wei
authors.affiliation: State Key Laboratory for Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, 200030, China. hyou@sjtu.edu.cn.
authors.forename: Hong-Yu
authors.initials: HY
authors.lastname: Ou
mesh_terms: D000992:Antitoxins / Q000235:genetics / Q000378:metabolism; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism*; D001427:Bacterial Toxins / Q000235:genetics / Q000378:metabolism; D002876:Chromosomes, Bacterial / Q000235:genetics; D016680:Genome, Bacterial / Q000235:genetics*; D007711:Klebsiella pneumoniae / Q000235:genetics* / Q000378:metabolism*; D010957:Plasmids / Q000235:genetics
chemical_list: D000992:Antitoxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins
keywords: In silico detection; Klebsiella pneumoniae; Type II toxin-antitoxin loci