Dataset Information

(TMT)-quantitative proteomic study of Bacillus cereus tsu1

ABSTRACT: In this project, we report the bacterial proteome expression profile change for different time points when culturing in rapeseed cake substrate (RCS). Bacillus cereus tsu1 was cultured in RCS (25g/L) for 12 hours, 24 hours and 48 hours. At each time point, cells were stained with Sudan Black to monitor PHB accumulation. Bacterial cells were loaded with PHB after 12-hour culture and significant degradation of PHB was observed after 48-hour culture. Bacterial proteome profile changes were identified using tandem mass tags mass spectrometry (TMT-MS)-based quantitative proteomics analysis. From TMT proteomics analysis, 3,237 proteins were detected and quantified from the bacterial pellet protein extraction, from which proteins related with PHB biosynthesis and degradation were identified. Quantitative analysis revealed that 146 (between 12h and 24h samples), and 158 (between 12h and 48h) proteins showed significant differences. Several STRING protein interaction networks were developed for significantly changed protein related with sporulation and anaerobic respiration.

INSTRUMENT(S): LTQ Orbitrap

ORGANISM(S): Bacillus Cereus

TISSUE(S): Cell Culture

SUBMITTER: Ted Thannhauser

LAB HEAD: Theodore Thannhauser <tt34@cornell.edu>

PROVIDER: PXD009960 | Pride | 2021-09-08

REPOSITORIES: Pride

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Publications

Proteome profile changes during poly-hydroxybutyrate intracellular mobilization in gram positive Bacillus cereus tsu1.

Li Hui H O'Hair Joshua J Thapa Santosh S Bhatti Sarabjit S Zhou Suping S Yang Yong Y Fish Tara T Thannhauser Theodore W TW

BMC microbiology 20200519 1

<h4>Background</h4>Bacillus cereus is a bacterial species which grows efficiently on a wide range of carbon sources and accumulates biopolymer poly-hydroxybutyrate (PHB) up to 80% cell dry weight. PHB is an aliphatic polymer produced and stored intracellularly as a reservoir of carbon and energy, its mobilization is a key biological process for sporulation in Bacillus spp. Previously, B. cereus tsu1 was isolated and cultured on rapeseed cake substrate (RCS), with maximum of PHB accumulation reac ...[more]

PMID: 32429845

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Project description:Parkinson disease (PD) is a neurodegenerative disease characterized by the accumulation of alpha-synuclein (SNCA) and other proteins in aggregates termed âLewy Bodiesâ within neurons. PD has both genetic and environmental risk factors, and while processes leading to aberrant protein aggregation are unknown, past work points to abnormal levels of SNCA and other proteins. Although several genome-wide studies have been performed for PD, these have focused on DNA sequence variants by genome-wide association studies (GWAS) and on RNA levels (microarray transcriptomics), while genome-wide proteomics analysis has been lacking. After appropriate filters, proteomics identified 3,558 unique proteins and 283 of these (7.9%) were significantly different between PD and controls (q-value<0.05). RNA-sequencing identified 17,580 protein-coding genes and 1,095 of these (6.2%) were significantly different (FDR p-value<0.05), but only 166 of the FDR significant protein-coding genes (0.94%) were present among the 3,558 proteins characterized. Of these 166, eight genes (4.8%) were significant in both studies, with the same direction of effect. Functional enrichment analysis of the proteomics results strongly supports mitochondrial-related pathways, while comparable analysis of the RNA-sequencing results implicates protein folding pathways and metallothioneins. Ten of the implicated genes or proteins co-localized to GWAS loci. Evidence implicating SNCA was stronger in proteomics than in RNA-sequencing analyses. Notably, differentially expressed protein-coding genes were more likely to not be characterized in the proteomics analysis, which lessens the ability to compare across platforms. Combining multiple genome-wide platforms offers novel insights into the pathological processes responsible for this disease by identifying pathways implicated across methodologies. The study consists of mRNA-Seq (29 PD, 44 neurologically normal controls) and three-stage Mass Spectrometry Tandem Mass Tag Proteomics (12 PD, 12 neurologically normal controls) performed in post-mortem BA9 brain tissue. The proteomics samples are a subset of the RNA-Seq samples.

Dataset Information

(TMT)-quantitative proteomic study of Bacillus cereus tsu1

Publications

Proteome profile changes during poly-hydroxybutyrate intracellular mobilization in gram positive Bacillus cereus tsu1.

Similar Datasets

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