Project description:Lactobacillus casei Zhang is a probiotic bacterium isolated from koumiss in Inner Mongolia of China that has been commercially used as a starter in the manufacture of dairy products. To study the gene expression profiles of L. casei Zhang during growth in milk, a whole-genome microarray was used. Compared to L. casei Zhang grown to late logarithmic phase in milk, 61 genes were significantly up-regulated (>5 fold) in stationary phase, whereas 26 genes were down-regulated. Collectively, these data showed that the majority of the identified genes was involved in carbohydrate metabolism and energy production, followed by genes involved in nucleotide metabolism, inorganic ion transport, amino acid transport and metabolism, chaperone, etc. This study demonstrates the fundamental effects of cultural conditions on the transcriptome of L. casei Zhang. Moreover, it improves the understanding of the growth and survival mechanism of the bacterium during the late stage of milk fermentation.
Project description:The data submitted is for the proteomics data published in the paper: Quantitative proteomics reveals a role for epigenetic reprogramming during human monocyte differentiation D Nicholas, H Tang, Q Zhang, J Rudra, F Xu, W Langridge, K Zhang Molecular & Cellular Proteomics 14 (1), 15-29.
Project description:DNA methylation is an important epigenetic modification. DNA methylation phenomenon exists widely in bacteria, plants and animals and is involved in a variety of biological processes.The wild Lactobacillus casei Zhang and its mutant Lactobacillus casei Zhang Δpglx were used as the research subjects.Proteomics was used to explore the effects of DNA methylation on various aspects of Lactobacillus casei.