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Background Small non-coding RNAs (sRNAs) regulate bacterial gene expression at the post-transcriptional level. STnc640 is a type of sRNA that was identified in Salmonella Typhimurium. Results In this study, STnc640 in Salmonella Enteritidis was confirmed to be an Hfq-dependent sRNA. TargetRNA software analysis showed that fimbrial genes fimA and bcfA were likely to be the target genes of STnc640...
The role of SEF14 fimbriae in virulence remains to be elucidated and in this study, we showed that sefA mutant constructed in the wild-type (WT) Salmonella enteritidis strain 50336 displayed increased invasion to IPEC-J2 cell lines and survival in mouse peritoneal macrophages, and the lethal dose 50% (LD 50 ) in 6-week-old Balb/c mice intra-peritoneally injected with WT S. enteritidis strain...
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