Brucella sp. clpP delta
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ABSTRACT:
PROVIDER: PRJNA562802 | ENA |
REPOSITORIES: ENA
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Project description:Brucella melitensis strain:clpP delta Genome sequencing
| PRJNA562793 | ENA
Project description:Brucella abortus strain:clpP Genome sequencing
| PRJNA573837 | ENA
Project description:Intracellular proteolysis via ATP-dependent proteases is a conserved biological process. The ATP-dependent Clp protease is made up of peptidase ClpP and ATP-dependent chaperones and plays an important role in the proteolysis process. In several pathogenic bacteria, the Clp protease is implicated in the stress reponses and contributes to the bacterial virulence. In brucella abortus, the ΔclpP mutant strain exhibited a pronounced growth defect in TSB medium and the results showed that the ΔclpP mutant was sensitive to high temperature, high osmotic environment and iron deficient environment. In addition, deletion of the clpP significantly affected Brucella virulence in macrophage and mice infection models. Based on the iTRAQ analysis, the different expressed proteins were mainly involved in amino acid transport and metabolism, energy production and conversion, and secondary metabolites biosynthesis, transport and catabolism. Overall, our study revealed preliminary molecular mechanism between Clp protease, bacterial growth, stress response and bacterial virulence in Brucella strains
2023-10-24 | PXD034842 | Pride
Project description:Investigation of whole genome gene expression level changes in a Brucella melitensis delta prlr mutant compared to the wild type strain. The mutants analyzed in this study are further described in A. Mirabella, R-M Yanez, R.M. Delrue, S. Uzureau, M.S. Zygmunt, A. Cloeckaert, X. De Bolle, J.J. Letesson (2012). The two component system PrlS/PrlR of Brucella melitensis is required for persistence in mice and appears to respond to ionic strength. Microbiology
2012-12-31 | GSE34633 | GEO
Project description:Purpose:To gain insight into the spectrum of Brucella gene affected by the ClpP protease, as well as the genetic basis for the distinctive phenotypic properties exhibited by the clpP mutant strain. Methods: Three B. abortus 2308 and the three clpP mutant were grown in TSB at 37℃ until the log phase was reached, total RNA was isolated using the TRIzol according to the manufacturer’s instructions.The sequencing library of each RNA sample was prepared by using NEB Next Ultra Directional RNA Library Prep Kit for Illumina as recommended by the manufacturer.The HiSeq 4000 platform was used to perform the transcriptome sequencing. Results: In total, 772 genes that exhibited different expression (Fold change>4, and FDR<0.05) were identified in the clpP mutant. In the clpP mutant strain, 376 genes were up-regulated and 396 genes were down-regulated. Conclusions: According to the result of COG analysis, the different expressed genes were mainly involved in Energy production and conversion, Cell wall/membrane/envelope biogenesis, and Carbohydrate transport and metabolism. KEGG pathway analysis demonstrated that the genes exhibited significant difference were primarily enriched in ABC transporters, beta-Lactam resistance, Oxidative phosphorylation, Cationic antimicrobial peptide (CAMP) resistance, Limonene and pinene degradation, Lysine degradation, Valine, leucine and isoleucine degradation, Chloroalkane and chloroalkene degradation, Ascorbate and aldarate metabolism, Tryptophan metabolism, Citrate cycle (TCA cycle), and Histidine metabolism.
2022-02-22 | GSE126915 | GEO
Project description:The peptidase ClpP is conserved from bacteria to human. In the mitochondrial matrix, it multimerizes and forms a macromolecular proteasome-like cylinder. Because of its known relevance for the mitochondrial unfolded protein response during cell stress, we characterized two ClpP knock-out mouse founder lines and documented similar phenotypes. Ubiquitously, ClpP absence led to accumulation of its interactor protein ClpX without transcript upregulation. Interestingly, most wild-type tissues with substantial ClpP amounts had no detectable ClpX. This inverse correlation suggests that ClpX levels and degradation are regulated by ClpP. The expectation of similar protein levels, in view of a reported association of heptameric ClpP rings with hexameric ClpX rings, was confirmed only in testis of wild-type animals. Germline tissue was exceptional also in its vulnerability to ClpP deletion, with both founder lines showing complete infertility for males and females. Otherwise, ubiquitous mitochondrial dysfunction was apparent from severe growth retardation and reduced spontaneous motor activity of the animals, and from a pronounced decrease in pre-/postnatal survival. Spermatogenesis was found aborted at the spermatid stage, acrosomes and axonemes were not formed. Overall, tissue-specific roles of ClpP were evident by this massive effect for germ cells, mild bioenergetic deficits in muscle and liver tissues, and excellent compensation in brain. ClpX was previously reported to chaperone unfolded proteins and also DNA condensation in mitochondria, so it is likely that this pathway is particularly susceptible in germ cells. In conclusion, our study indicates that the role of ClpP in quality control is indispensable during development for cells with rapid changes of mitochondrial numbers, and is relevant during aging for growth and survival of the organism. Factorial design comparing ClpP knock-out mice with wild type littermates in five different tissues (brain, testis, liver, skeletal and heart muscle)
2013-07-17 | E-GEOD-40207 | biostudies-arrayexpress
Project description:Investigation of whole genome gene expression level changes in a Brucella melitensis delta prlr mutant compared to the wild type strain. The mutants analyzed in this study are further described in A. Mirabella, R-M Yanez, R.M. Delrue, S. Uzureau, M.S. Zygmunt, A. Cloeckaert, X. De Bolle, J.J. Letesson (2012). The two component system PrlS/PrlR of Brucella melitensis is required for persistence in mice and appears to respond to ionic strength. Microbiology A six chip study using total RNA recovered from three separate wild-type cultures of Brucella melitensis 16M and three separate cultures of a prlR mutant strain. Each chip measures the expression level of 3,198 genes from Brucella melitensis 16M with nineteen 60 mer probe pairs (PM/MM) per gene, with three-fold technical redundancy.
2012-12-31 | E-GEOD-34633 | biostudies-arrayexpress