Unknown,Transcriptomics,Genomics,Proteomics

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DNA microarray analysis of genes positively regulated by HapR


ABSTRACT: Vibrio cholerae strains A1552 and ATN140 (A1552-delta-hapR) were diluted 1:100 from over night cultures and grown aerobically (at 250 rpm) in M9 minimal medium supplemented with vitamins (MEM vitamin solution, BRL) and 0.5% lactate. At OD600 ~ 0.3 2 mM (GlcNAc)6 (Seikagaku America, East Falmouth, MA) was added and the cultures were further shaken for 2 hours. After harvesting the bacteria by centrifugation, the cell pellet was resuspended in Trizol reagent (GIBCO/BRL) and stored at -80 degrees C until further use. The procedure of RNA isolation and the corresponding amplicon microarray experiments was described by K. L. Meibom et al., Proc. Natl. Acad. Sci. U.S.A 101, 2524-9 (2004). Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. Computed

ORGANISM(S): Vibrio cholerae

SUBMITTER: Melanie Blokesch 

PROVIDER: E-GEOD-3576 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Chitin induces natural competence in Vibrio cholerae.

Meibom Karin L KL   Blokesch Melanie M   Dolganov Nadia A NA   Wu Cheng-Yen CY   Schoolnik Gary K GK  

Science (New York, N.Y.) 20051201 5755


The mosaic-structured Vibrio cholerae genome points to the importance of horizontal gene transfer (HGT) in the evolution of this human pathogen. We showed that V. cholerae can acquire new genetic material by natural transformation during growth on chitin, a biopolymer that is abundant in aquatic habitats (e.g., from crustacean exoskeletons), where it lives as an autochthonous microbe. Transformation competence was found to require a type IV pilus assembly complex, a putative DNA binding protein,  ...[more]

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