Project description:To study their metabolic potential in natural ecosystems, we developed a species-independent LAB microarray, containing 2,269 30-mer oligonucleotides, and targeting 406 genes that play a key role in the production of sugar catabolites, bacteriocins, exopolysaccharides, and aromas, in probiotic and biosafety characteristics, and in stress response. Also, genes linked to negative traits such as antibiotic resistance and virulence are represented. This experiment is a validation experiment, where we hybridized labelled DNA from 20 LAB strains, covering 86% of all oligos. Keywords: Platform validation experiment
Project description:To study their metabolic potential in natural ecosystems, we developed a species-independent LAB microarray, containing 2,269 30-mer oligonucleotides, and targeting 406 genes that play a key role in the production of sugar catabolites, bacteriocins, exopolysaccharides, and aromas, in probiotic and biosafety characteristics, and in stress response. Also, genes linked to negative traits such as antibiotic resistance and virulence are represented. This experiment is a validation experiment, where we hybridized labelled DNA from 20 LAB strains, covering 86% of all oligos. Keywords: Platform validation experiment All sampels were hybridized twice in the Cy3 channel. In the Cy5 channel no sample was hybridized.
Project description:To study their metabolic potential in natural ecosystems, we developed a species-independent LAB microarray, containing 2,269 30-mer oligonucleotides, and targeting 406 genes that play a key role in the production of sugar catabolites, bacteriocins, exopolysaccharides, and aromas, in probiotic and biosafety characteristics, and in stress response. Also, genes linked to negative traits such as antibiotic resistance and virulence are represented. This experiment is a validation experiment, where we hybridized labelled RNA from 20 LAB strains, covering 86% of all oligos. Keywords: Platform validation experiment
Project description:To study their metabolic potential in natural ecosystems, we developed a species-independent LAB microarray, containing 2,269 30-mer oligonucleotides, and targeting 406 genes that play a key role in the production of sugar catabolites, bacteriocins, exopolysaccharides, and aromas, in probiotic and biosafety characteristics, and in stress response. Also, genes linked to negative traits such as antibiotic resistance and virulence are represented. This experiment is a validation experiment, where we hybridized labelled RNA from 20 LAB strains, covering 86% of all oligos. Keywords: Platform validation experiment Loop design, hence all RNA samples were hybridized once in each colour (Cy3 and Cy5).
Project description:To dissect the requirements of membrane protein degradation from the ER, we expressed the mouse major histocompatibility complex class I heavy chain H-2K(b) in yeast. Like other proteins degraded from the ER, unassembled H-2K(b) heavy chains are not transported to the Golgi but are degraded in a proteasome-dependent manner. The overexpression of H-2K(b) heavy chains induces the unfolded protein response (UPR). In yeast mutants unable to mount the UPR, H-2K(b) heavy chains are greatly stabilized. This defect in degradation is suppressed by the expression of the active form of Hac1p, the transcription factor that upregulates UPR-induced genes. These results indicate that induction of the UPR is required for the degradation of protein substrates from the ER.