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. 2013 Aug 22;9(8):e1003716. doi: 10.1371/journal.pgen.1003716

Table 1. Biological significance of Tn-seq-derived candidate genes.

Category Locus tag Gene name p value log2 change Niche KEGG classification (subcategory) Literature-based biological significance Model system
Informational EcF11_3256 bipA, typA <0.0001 −8.12 blood,PC Unclassified Cold stress response [53] E. coli K12 lab strain/in vitro
Co-ordination of pathogenicity island gene expression [30] EPEC/in vitro
BipA binds ribosome under stress conditions [35] Salmonella enterica/in vitro
Stress adaptation and symbiosis [36] Sinorhizobium meliloti/in vivo plant model
EcF11_5238 hdeD 0.0128 −4.80 blood,PC Hypothetical Acid stress regulon [54] E. coli K12 lab strain/in vitro
EcF11_1255 lrhA 0.0001 −3.35 blood,PC Hypothetical Regulation of virulence genes [31] EHEC/in vitro
Regulation of motility, lipase activity, toxin expression and virulence [55] Xenorhabdus nematophila/in vivo insect model
EcF11_2271 rfaH 0.0002 −7.29 blood,PC Informational (transcription factor) Global regulator of virulence [32] UPEC/in vitro and in vivo mouse model
EcF11_4315 nhaR 0.0121 −1.36 blood,PC Informational (transcription factor) Regulates genes that facilitate cell-cell adhesion and adhesion to host cells [56] Proteus Mirabilis/in vivo mouse model
EcF11_0317 sirB1 0.0268 −3.26 blood Hypothetical Regulation of the SPI type III secretion system [67] Salmonella typhimurium/in vitro
EcF11_5302 hdfR 0.0019 −3.44 blood Hypothetical Regulator of the std fimbrial operon [68] Salmonella enterica/in vitro
Regulates flagellar synthesis [69] E. coli K12 lab strain/in vitro
Membrane architecture EcF11_1390 kpsM 0.0033 −8.11 blood,PC Environmental interactions (transporter) Capsular polysaccharide exporter [70] E. coli K1/in vitro
KpsM is predominantly encoded by strains of the E. coli B2 phylotype [71] E. coli/in silico
Resistance against phagocyte-mediated killing [33] ExPEC/tissue culture
EcF11_1396 kpsS 0.0229 −3.84 blood,PC Unclassified Capsular polysaccharide exporter [72] E. coli K5/in vitro
EcF11_1397 kpsC 0.0035 −2.57 blood Unclassified Capsular polysaccharide exporter [73] E. coli K5/in vitro
EcF11_1398 kpsU 0.0018 −4.78 blood,PC Metabolism (lipopolysaccharide biosynthesis) Capsular polysaccharide exporter [73] E. coli K5/in vitro
EcF11_1399 kpsD 0.0067 −1.95 blood,PC Hypothetical Capsular polysaccharide exporter [74] E. coli K5/in vitro
EcF11_1400 kpsE 0.0006 −3.40 blood,PC Metabolism (lipopolysaccharide biosynthesis) Capsular polysaccharide exporter [57] E. coli
Capsule production and adhesion/invasion of host cells [75] Campylobacter jejuni/in vitro and tissue culture
EcF11_1401 kpsF 0.0192 −2.66 blood,PC Metabolism (lipopolysaccharide biosynthesis) Capsular polysaccharide exporter [76] E. coli K1/in vitro
EcF11_0979 wzzB 0.0480 −2.39 blood,PC Metabolism (lipopolysaccharide biosynthesis) Regulation of O-antigen chain length [77] Salmonella typhimurium and Shigella flexneri/in vitro
Nutrient utilization EcF11_3352 manA 0.0024 −3.20 blood,PC Metabolism (fructose and mannose metabolism) Mannose utilization, exopolysaccharide structure, biofilm formation and virulence [78] Photorhabdus Luminescens/in vitro and in vivo insect model
EcF11_2113 fitD 0.0048 −2.87 blood Environmental interactions (transporter) Faciliates iron uptake [79] various E. coli/in vitro
EcF11_4915 eutJ 0.0191 −2.14 blood Unclassified Utilization of ethanolamine as a carbon source [80] Salmonella typhimurium/in vitro
EcF11_4920 eutT 0.0096 −2.49 blood Metabolism (porphyrin and chlorophyll metabolism) Utilization of ethanolamine as a carbon and nitrogen source [81] Salmonella enterica/in vitro
Other EcF11_0498 tehA 0.0188 −1.68 blood Unclassified Resistance to antiseptics and disinfectants [82] E. coli K12 lab strain/in vitro
EcF11_2210 tieB, senB 0.0002 −2.81 blood Hypothetical Entertoxin produced by E. coli and Shigella [83] EIEC/ex vivo rabbit ileum
EcF11_3975 ompR 0.0164 −1.97 blood Environmental interactions (two-component system) Osmotic stress resistance and fitness in a mouse urinary tract infection model [84] UPEC/in vitro and in vivo mouse model
EcF11_2727 potD 0.0063 −1.44 PC Environmental interactions (transporter) Polyamine surface protein required for virulence [85] Streptococcus pneumoniae/in vivo mouse model