Project description:We employed a proteogenomics workflow to identify microproteins encoded by small Open Reading Frames (ORFs) in the genome of Mycobacterium smegmatis strain mc²155.
Project description:Comparison of gene expression profile of the whiB4 mutant strain of Mycobacterium tuberculosis with the wild type Mycobacterium tuberculosis H37RV Mtb WhiB4 mutant mRNA was compared with the mRNA of wtMtb H37RV under aerobic conditons
Project description:A comparative genomic approach was used to identify large sequence polymorphisms among Mycobacterium avium isolates obtained from a variety of host species. DNA microarrays were used as a platform for comparing mycobacteria field isolates with the sequenced bovine isolate Mycobacterium avium subsp. paratuberculosis (Map) K10. ORFs were classified as present or divergent based on the relative fluorescent intensities of the experimental samples compared to Map K10 DNA. Map isolates cultured from cattle, bison, sheep, goat, avian, and human sources were hybridized to the Map microarray. Three large deletions were observed in the genomes of four Map isolates obtained from sheep and four clusters of ORFs homologous to sequences in the Mycobacterium avium subsp. avium (Maa) 104 genome were identified as being present in these isolates. One of these clusters encodes glycopeptidolipid biosynthesis enzymes. One of the Map sheep isolates had a genome profile similar to a group of Mycobacterium avium subsp. silvaticum (Mas) isolates which included four independent laboratory stocks of the organism traditionally identified as Maa strain 18. Genome diversity in Map appears to be mostly restricted to large sequence polymorphisms that are often associated with mobile genetic elements. Keywords: Comparative genomic hybridization
Project description:Transcriptional profiling of Mycobacterium tuberculosis H37Rv and Mycobacterium bovis Ravenel before (i.e., log-phase control) and at 24h and 96h after nutrient starvation. The transcriptional profile of the two strains were compared at log phase, and after 24h and 96h of starvation. In addition, the response of each strain to starvation was examined after 24h and 96h of starvation.
Project description:Transcriptional profiling of SirR and manganese regulated expression of genes in Mycobacterium tuberculosis strains comparing high manganese vs. low manganese in Rv (wild type Mycobacterium tuberculosis) and ST70 (mntR mutant strain of Mycobacterium tuberculosis)
Project description:Transcriptional profiling of Mycobacterium smegmatis comparing a strain undergoing I-SceI generated DNA damage at a single genomic locus versus a control strain with no I-SceI recognition sequence in its genome (and thus not undergoing double strand DNA breaks Gene designations are from the original annotation, not the updated
Project description:We report the effects of VapC21 overexpression on Mycobacterium tuberculosis H37Rv strain. The total RNA was isolated from M. tuberculosis harboring either pTetR-int or pTetR-Int-vapC21 the expression was induced with 50 ng/ml anhydrotetracycline for 24 hrs. We report the effect of deletion VapC21 on the transciptional profile of Mycobacterium tuberculosis Erdman strain. For RNA-seq analysis, total RNA was isolated from mid-log phase culture of either parental or △vapC21 mutant strain.
Project description:Investigation of whole genome gene expression level changes in a Mycobacterium smegmatis mc2 155 delta-MSMEG_0166 mutant, compared to the wild-type strain. MSMEG_0166 is a transcriptional regulator in the gntR family. Mutations in MSMEG_0166 result in hypersensitivity to the bactericidal ubiquitin peptide Ub2, as well as oxidative stress caused by either organic or inorganic agents
Project description:Transcriptional profiling of SirR and manganese regulated expression of genes in Mycobacterium tuberculosis strains comparing high manganese vs. low manganese in Rv (wild type Mycobacterium tuberculosis) and ST70 (mntR mutant strain of Mycobacterium tuberculosis) Two strains each with two conditions experiment, Rv (Mycobacterium tuberculosis wild type strain) high manganese vs. low manganese and ST70 (mntR mutant strain of Mycobacterium tuberculosis) high manganese vs. low manganese. Number of biological replicates is 3 for each condition for each strain.
