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Role of whiB6 and kdpDE in the successful multidrug-resistant clone Mycobacterium tuberculosis B0/W148

ABSTRACT: Role of whiB6 and kdpDE in the successful multidrug-resistant clone Mycobacterium tuberculosis B0/W148

PROVIDER: PRJEB74233 | ENA |

REPOSITORIES: ENA

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Role of whiB6 and kdpDE in the successful multidrug-resistant clone Mycobacterium tuberculosis B0/W148 [whiB6_RNA-seq]

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System OMICs analysis of Mycobacterium tuberculosis Beijing B0/W148 cluster

Project description:Mycobacterium tuberculosis Beijing B0/W148 is one of the most widely distributed clusters in the Russian Federation and in some countries of the former Soviet Union. Recent studies have improved our understanding of the reasons for the “success” of the cluster but this area remains incompletely studied. Here, we focused on the system omics analysis of the RUS_B0 strain belonging to the Beijing B0/W148 cluster. Completed genome sequence of RUS_B0 (CP020093.1) and a collection of WGS for 200 cluster strains from the NCBI were used to describe the main genetic features of the population, as well as the level of resistance. In turn, proteome and transcriptome studies allowed to confirm the genomic data and to identify a number of finds that have not previously been described. Our results demonstrate that expression of the whiB6 which contains cluster-specific polymorphism (T4338371G) increased by more than 50 times in RUS_B0. Additionally, the level of ethA transcripts in RUS_B0 is increased almost 30 times compared to the H37Rv. Start sites for 10 genes were corrected based on the combination of proteomic and transcriptomic data. Additionally, based on the omics approach, we identified 5 new genes.

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Role of whiB6 and kdpDE in the successful multidrug-resistant clone Mycobacterium tuberculosis B0/W148

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Project description:Nowadays proteomics is the one of the major instruments for editing and correct decryption of genomic information. Genomic correction of socially significant pathogens, like Mycobacterium tuberculosis, is by far the most relevant. We conducted proteogenomic analysis of W-148 strain, which belong to the Beijing B0/W148 cluster. Strains of this cluster possess unique pathogenic properties and have a unique genome organization. Taking into account a high similarity of cluster strains at the genomic level we analysed MS/MS datasets obtained for 63 clinical isolates of Beijing B0/W148. Based on H37Rv and W-148 annotations we identified 2,546 proteins, representing more than 60 % of total proteome. A set of peptides (n=404), specific for W-148 was found in comparison with H37Rv. Start sites for 32 genes were corrected based on combination of LC-MS/MS proteomic data with genomic six frame translation. Additionally, presence of peptides for 10 pseudogenes has been confirmed. Thus, the data obtained by us undoubtedly shows the need for conducting genome annotation based on proteomic data. Corrected during the study W-148 genome annotation will allow to use it in studies on Beijing B0/W148 cluster strains.

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