Protease Encoding bacteria
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB24038 | ENA |
REPOSITORIES: ENA
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Project description:For many organisms, death is a tangible, visible event. In bacteria, death can be a natural or an induced process 1. Death permits genes conferring a survival advantage to be selected in a bacterial population. Furthermore, biomolecule recycling from dead bacteria is crucial under nutrient limitation across ecosystems 2. However, the underlying mechanisms that permit macromolecule recycling after bacterial death are largely unknown. Here, we show that bacteria encode their own post-mortem protein catabolism. We observed that live bacteria cannot recycle the lysates of dead bacteria from which the Lon protease-encoding lon gene is deleted. The nutrient recycling function of the Lon protease manifests itself after the death of the bacteria that produced it and is ATP-independent. We demonstrate that the post-mortem Lon protease is a cooperative trait susceptible to exploitation by cheating 3. However, we propose that, in addition to a kin selected benefit of helping related cells, the fitness benefit of cheating is outweighed by the fitness benefit of producing Lon protease under stress. This finding of an unexpected post-mortem biochemistry fundamentally revises our understanding of the nutrient recycling process. Further, we suggest a solution to an evolutionary puzzle of how a phenotype that manifests after death can exist in a population. Nutrient recycling is a vital aspect of all ecosystems, and our results demonstrate a potential new molecular target for modulating bacterial growth that does not directly target the live bacteria.
2025-01-23 | MTBLS10044 | MetaboLights
Project description:Determine if transcripts are released by protease treatment Keywords: Comparison of protease treatments
2005-12-01 | GSE3686 | GEO
Project description:Polylactic acid (PLA) is a promising biodegradable material used in various fields, such as mulching films and disposable packaging materials. Biological approaches for completely degrading biodegradable polymers can provide environmentally friendly solutions. However, to our knowledge, no studies have performed transcriptome profiling to analyze PLA-degrading genes of PLA-degrading bacteria. Therefore, this study reports for the first time an RNA sequence approach for tracing genes involved in PLA biodegradation in the PLA-degrading bacterium Brevibacillus brevis. In the interpretation results of the differentially expressed genes, the hydrolase genes mhqD and nap and the serine protease gene besA were up-regulated by a fold change of 7.97, 4.89, and 4.09, respectively. This result suggests that hydrolases play a key role in PLA biodegradation by B. brevis. In addition, Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses showed that genes implicated in biofilm formation were upregulated. The biodegradation of PLA starts with bacteria attaching to the surface of PLA and forming a biofilm. Therefore, it could be confirmed that the above genes were up-regulated for access to PLA and biodegradation. Our results provide transcriptome-based insights into PLA biodegradation, which pitch a better understanding of microbial biodegradation of plastics.
2025-01-16 | GSE223668 | GEO
Project description:Members of the serpin (serine protease inhibitor) superfamily have been identified in higher, multicellular eukaryotes, as well as in bacteria, although surveillance of available genome sequences indicates that bacterial serpin-encoding (ser) homologs are not widely distributed. In members of the genus Bifidobacterium this gene appears to be present in at least five, and perhaps up to nine, out of 30 species tested. Moreover, phylogenetic analysis using available bacterial and eukaryotic serpin sequences revealed that bifidobacteria specify serpins that form a separate clade. We characterized the ser210B locus of Bifidobacterium breve 210B, which consists of a number of genes, whose deduced protein products display significant similarity to proteins encoded by corresponding loci found in several other bifidobacteria. Northern hybridization, primer extension, micro array analysis, RT-PCR and Quantitative Real Time (qRT) - PCR analysis revealed that a 3.5 kb polycistronic mRNA, encompassing the ser210B operon with a single transcriptional start site, is strongly induced following treatment of B. breve 210B cultures with particular proteases. In contrast, transcription of the ser homolog of other bifidobacteria, such as Bifidobacterium longum subsp. infantis, Bifidobacterium dentium and B. longum subsp. longum, appears to be triggered by a different set of proteases Transcriptional response to protease treatments (kallikrein, papain and chymotrypsin) of Bifidobacterium breve 210B
2010-05-06 | E-GEOD-20626 | biostudies-arrayexpress
Project description:Soil bacteria in cotton fields in Xinjiang Raw sequence reads
| PRJNA1100771 | ENA
Project description:Profiling protease and protease inhibitor gene expression in tumors and their microenvironment
| PRJNA99655 | ENA
Project description:In the present study, we hypothesized that C/EBPa (CCAAT/enhancer-binding protein alpha) plays a role in cell regeneration in response to bronchiolar epithelial cell injury. C/EBPa mediated ciliated cell regeneration after naphthalene bronchiolar epithelial cell injury in vivo. Furthermore, we demonstrated that C/EBPa regulates protease/anti-protease balance after lung injury, and intratracheal treatment with anti-protease (BPTI) restored ciliated cell regeneration after naphthalene injury in CebpaD/D mice.
2012-05-13 | GSE29285 | GEO
Project description:In the present study, we hypothesized that C/EBPa (CCAAT/enhancer-binding protein alpha) plays a role in cell regeneration in response to bronchiolar epithelial cell injury. C/EBPa mediated ciliated cell regeneration after naphthalene bronchiolar epithelial cell injury in vivo. Furthermore, we demonstrated that C/EBPa regulates protease/anti-protease balance after lung injury, and intratracheal treatment with anti-protease (BPTI) restored ciliated cell regeneration after naphthalene injury in CebpaD/D mice. Cebpa d/d VS. Control mice 0hr, 3hr and 72hr after naphthalene injury. Three replicates each.
2012-05-12 | E-GEOD-29285 | biostudies-arrayexpress
Project description:Gene expression by Aspergillus protease
| PRJNA774169 | ENA
Project description:Determine if transcripts are released by protease treatment During total RNA isolation cell free lysates from stationary-phase cultures or exponential cultures were treated with one of three proteases or buffer alone. All experimental samples are over a common reference. There are two replicates for each sample.
2010-06-30 | E-GEOD-3686 | biostudies-arrayexpress