High-throughput comparison of gene fitness among related bacteria

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 水生生物分子与细胞生物学研究中心 > 期刊论文

	High-throughput comparison of gene fitness among related bacteria
	Canals, Rocio 1; Xia, Xiao-Qin 3; Fronick, Catrina 5; Clifton, Sandra W.5; Ahmer, Brian M. M.4; Andrews-Polymenis, Helene L.6; Porwollik, Steffen 2; McClelland, Michael 1,2
刊名	BMC GENOMICS
	2012-05-30
卷号	13
关键词	ENTERICA SEROVAR TYPHIMURIUM SALMONELLA-ENTERICA ESCHERICHIA-COLI RESPONSE REGULATOR III SECRETION PROTEIN TYPHI SPECIFICITY EXPRESSION VIRULENCE
ISSN号	1471-2164
通讯作者	McClelland, M (reprint author), Univ Calif Irvine, Irvine, CA 92717 USA.
中文摘要	Background: The contribution of a gene to the fitness of a bacterium can be assayed by whether and to what degree the bacterium tolerates transposon insertions in that gene. We use this fact to compare the fitness of syntenic homologous genes among related Salmonella strains and thereby reveal differences not apparent at the gene sequence level. Results: A transposon Tn5 derivative was used to construct mutants in Salmonella Typhimurium ATCC14028 (STM1) and Salmonella Typhi Ty2 (STY1), which were then grown in rich media. The locations of 234,152 and 53,556 integration sites, respectively, were mapped by sequencing. These data were compared to similar data available for a different Ty2 isolate (STY2) and essential genes identified in E. coli K-12 (ECO). Of 277 genes considered essential in ECO, all had syntenic homologs in STM1, STY1, and STY2, and all but nine genes were either devoid of transposon insertions or had very few. For three of these nine genes, part of the annotated gene lacked transposon integrations (yejM, ftsN and murB). At least one of the other six genes, trpS, had a potentially functionally redundant gene encoded elsewhere in Salmonella but not in ECO. An additional 165 genes were almost entirely devoid of transposon integrations in all three Salmonella strains examined, including many genes associated with protein and DNA synthesis. Four of these genes (STM14_1498, STM14_2872, STM14_3360, and STM14_5442) are not found in E. coli. Notable differences in the extent of gene selection were also observed among the three different Salmonella isolates. Mutations in hns, for example, were selected against in STM1 but not in the two STY strains, which have a defect in rpoS rendering hns nonessential. Conclusions: Comparisons among transposon integration profiles from different members of a species and among related species, all grown in similar conditions, identify differences in gene contributions to fitness among syntenic homologs. Further differences in fitness profiles among shared genes can be expected in other selective environments, with potential relevance for comparative systems biology.
英文摘要	Background: The contribution of a gene to the fitness of a bacterium can be assayed by whether and to what degree the bacterium tolerates transposon insertions in that gene. We use this fact to compare the fitness of syntenic homologous genes among related Salmonella strains and thereby reveal differences not apparent at the gene sequence level.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biotechnology & Applied Microbiology ; Genetics & Heredity
研究领域[WOS]	Biotechnology & Applied Microbiology ; Genetics & Heredity
关键词[WOS]	ENTERICA SEROVAR TYPHIMURIUM ; SALMONELLA-ENTERICA ; ESCHERICHIA-COLI ; RESPONSE REGULATOR ; III SECRETION ; PROTEIN ; TYPHI ; SPECIFICITY ; EXPRESSION ; VIRULENCE
收录类别	SCI
资助信息	Beatriu de Pinos fellowship; NIH [HHSN272200900040C]; PATRIC [AI039557 AI052237, AI073971, AI075093, AI077645 AI083646]; USDA [2009-03579-30127, 2011-67017-30127]; Binational Agricultural Research and Development Fund; CDMRP BCRP [W81XWH-08-1-0720]
语种	英语
WOS记录号	WOS:000310704900001
公开日期	2013-01-09
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/17264]
专题	水生生物研究所_水生生物分子与细胞生物学研究中心_期刊论文
作者单位	1.Univ Calif Irvine, Irvine, CA 92717 USA 2.Vaccine Res Inst San Diego, San Diego, CA USA 3.Chinese Acad Sci, Inst Hydrobiol, Wuhan, Peoples R China 4.Ohio State Univ, Columbus, OH 43210 USA 5.Washington Univ, St Louis, MO USA 6.Texas A&M Univ, Syst Hlth Sci Ctr, College Stn, TX USA
推荐引用方式 GB/T 7714	Canals, Rocio,Xia, Xiao-Qin,Fronick, Catrina,et al. High-throughput comparison of gene fitness among related bacteria[J]. BMC GENOMICS,2012,13.
APA	Canals, Rocio.,Xia, Xiao-Qin.,Fronick, Catrina.,Clifton, Sandra W..,Ahmer, Brian M. M..,...&McClelland, Michael.(2012).High-throughput comparison of gene fitness among related bacteria.BMC GENOMICS,13.
MLA	Canals, Rocio,et al."High-throughput comparison of gene fitness among related bacteria".BMC GENOMICS 13(2012).