Light Response of KT2440 Mediated by Class II LitR, a Photosensor Homolog.

KT2440 retains three homologs (PplR1 to PplR3) of the LitR/CarH family, an adenosyl B-dependent light-sensitive MerR family transcriptional regulator. Transcriptome analysis revealed the existence of a number of photoinducible genes, including , (encoding DNA photolyase), (furan-containing fatty acid synthase), (GTP cyclohydrolase I), (cryptochrome-like protein), and multiple genes without annotated/known function. Transcriptional analysis by quantitative reverse transcription-PCR with knockout mutants of to showed that a triple knockout completely abolished the light-inducible transcription in , which indicates the occurrence of ternary regulation of PplR proteins.

Outbreak of Salmonella Braenderup infection originating in boxed lunches in Japan in 2008.

There have been only 2 reports of a large-scale foodborne outbreak arising from Salmonella enterica serotype Braenderup infection worldwide. On August 9, 2008, an outbreak originating in boxed lunches occurred in Okayama, Japan. We conducted a cohort study of 786 people who received boxed lunches from a particular catering company and collected 644 questionnaires (response rate:82%).