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Comparative genomic and transcriptomic analysis revealed genetic characteristics related to solvent formation and xylose utilization in Clostridium acetobutylicum EA 2018

ABSTRACT: Comparative genomic and transcriptomic analysis revealed genetic characteristics related to solvent formation and xylose utilization in Clostridium acetobutylicum EA 2018

PROVIDER: PRJNA131675 | ENA |

REPOSITORIES: ENA

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Comparative genomic and transcriptomic analysis revealed genetic characteristics related to solvent formation and xylose utilization in Clostridium acetobutylicum EA 2018

2012-07-23 | GSE23071 | GEO

Comparative genomic and transcriptomic analysis revealed genetic characteristics related to solvent formation and xylose utilization in Clostridium acetobutylicum EA 2018

Project description:Transcriptomic profiling of gene expression in EA 2018 relative to that of ATCC824 revealed several key genes related to solvent formation. For example, spo0A and adhEII have higher expression level, and most of the acid formation related genes have lower expression level in EA 2018. Cells for RNA isolation were grown on P2 medium and collected at 9 h, 13 h, 17 h, 21 h, 24 h and 30 h by centrifugation at 4M-BM-0C and 4500 x g for 10 min. Total RNA was extracted and purified by using Trizol (Invitrogen, Carlsbad, CA, USA) and RNeasy cleanup kit (Qiagen, Inc., Valencia, CA, USA) according to the manufacturerM-bM-^@M-^Ys protocol. The total RNA yield was quantified by spectrophotometric analysis (NanoDrop Technology, Cambridge, UK) and the quality was verified by gel electrophoresis. Agilent oligonucleotide microarrays technology was used for monochromic analysis, in which probes (size: 60bp; three replicates for each ORF) from the two groups were labeled by incorporation of cyanine 3 (Cy3) (Agilent Technologies, Palo Alto, CA, USA). Average linkage hierarchical clustering was performed using Cluster 3.0, and gene clusters were visualized in Treeview

2012-07-22 | E-GEOD-23071 | biostudies-arrayexpress

Clostridium acetobutylicum EA 2018

Project description:Clostridium acetobutylicum EA 2018 genome sequencing project

| PRJNA50455 | ENA

Comparative genomic and transcriptomic analysis revealed genetic characteristics related to solvent formation and xylose utilization in Clostridium acetobutylicum EA 2018.

Project description:BACKGROUND: Clostridium acetobutylicum, a gram-positive and spore-forming anaerobe, is a major strain for the fermentative production of acetone, butanol and ethanol. But a previously isolated hyper-butanol producing strain C. acetobutylicum EA 2018 does not produce spores and has greater capability of solvent production, especially for butanol, than the type strain C. acetobutylicum ATCC 824. RESULTS: Complete genome of C. acetobutylicum EA 2018 was sequenced using Roche 454 pyrosequencing. Genomic comparison with ATCC 824 identified many variations which may contribute to the hyper-butanol producing characteristics in the EA 2018 strain, including a total of 46 deletion sites and 26 insertion sites. In addition, transcriptomic profiling of gene expression in EA 2018 relative to that of ATCC824 revealed expression-level changes of several key genes related to solvent formation. For example, spo0A and adhEII have higher expression level, and most of the acid formation related genes have lower expression level in EA 2018. Interestingly, the results also showed that the variation in CEA_G2622 (CAC2613 in ATCC 824), a putative transcriptional regulator involved in xylose utilization, might accelerate utilization of substrate xylose. CONCLUSIONS: Comparative analysis of C. acetobutylicum hyper-butanol producing strain EA 2018 and type strain ATCC 824 at both genomic and transcriptomic levels, for the first time, provides molecular-level understanding of non-sporulation, higher solvent production and enhanced xylose utilization in the mutant EA 2018. The information could be valuable for further genetic modification of C. acetobutylicum for more effective butanol production.

| S-EPMC3044671 | biostudies-literature

Xylose utilization timecourse

Project description:We have identified a novel xylose-utilization phenotype controlled by a single gene, and we sought to characterize how both the presence and absence of xylose in the presence or absence of the trait affected the S. cerevisiae transcriptional program over time. To do so, we measured global steady state mRNA levels on three pairs of sister spores from a Simi White strain that was backcrossed twice to S288c. Each pair of spores was from an independent tetrad, and contained one xylose utilizing ("positive", GSY2465, 2466, 2469) and one xylose non-utilizing spore ("negative", GSY2464, 2467, 2470). We grew each of the six spores in the presence or absence of xylose for 72 hours with samples taken every 8 hours. We then assayed relative RNA abundance versus a pooled reference, containing equimolar amounts of each sample, using Agilent yeast catalog arrays.

2010-04-09 | GSE19116 | GEO

Transcription profiling by array of Clostridium acetobutylicum on glucose and xylose substrates under exponential, continuous and diauxie growth.

Project description:Clostridium acetobutylicum was grown in a batch-culture with minimal medium containing glucose and xylose as substrate. Diauxie growth was observed after glucose was consumed. Following the organism grows on xylose. Transcriptional analysis was done to pursue the cellular processes during the switch from growth on glucose to growth on xylose. We compared DNA-Microarray data from cells grown during the exponential phase on glucose (A), with cells growing during the start of diauxie growth lag (B), during the end of diauxie growth lag (C) and during exponential growth on xylose (D). We used cells grown in a continuous culture with glucose as substrate as common reference for the samples A-D.

2010-09-30 | E-MEXP-2613 | biostudies-arrayexpress

Expression analysis of Clostridium acetobutylicum ATCC 824 grown on different carbohydrates

Project description:Investigation of whole genome gene expression levels in Clostridium acetobutylicum strain 824 grown individually on starch, galactose, lactose, mannose, fructose, glucose, arabinose, xylose, cellobiose, maltose, sucrose

2010-05-15 | GSE18471 | GEO

Xylose utilization timecourse

2010-04-09 | E-GEOD-19116 | biostudies-arrayexpress

CcpA, a Pleiotropic Key Regulator in Butanol-producing Clostridium acetobutylicum ATCC 824

Project description:Clostridium acetobutylicum is a typical bacterium of major importance to industrial butanol production. In order to dissect the regulatory network pertaining to the industrial application of this bacterium, catabolite control protein A (CcpA) was investigated for its global function by DNA microarray.It showed that CcpA of C. acetobutylicum controls hundreds of genes, not only carbon metabolism, but also solvent production and sporulation in the life cycle.The results here demonstrated that CcpA is an important pleiotropic regulator related to some specific physiological and biochemical process in butanol-producing C. acetobutylicum.

2012-08-30 | GSE33364 | GEO

Identification of a sensor histidine kinase (BfcK) controlling biofilm formation in Clostridium acetobutylicum

Project description:Clostridium acetobutylicum has been extensively exploited to produce biofuels and solvents and its biofilm could dramatically improve its productivities. However, genetic control of C. acetobutylicum biofilm has not been dissected so far. Here, a total of 24 disruptants were finally obtained over several years of attempts. Biofilm formation and physiological phenotypes were characterized for these disruptants and most of them showed robust biofilm formation still, or showed both impaired biofilm formation and cell growth. Only a mutant with a disputed histidine kinase gene (CA_C2730, designated bfcK in this study) abolished biofilm formation without impaired cell growth or solvent production. Phosphoproteomic analysis revealed that bfcK could control C. acetobutylicum flagellar motility at both translational and post-translational (protein phosphorylation) levels. The bfcK also showed apparent regulation of a serine/threonine protein kinase (encoded by CA_C0404) which was involved in protein secretion. Based on these findings, possible bfcK-based mechanisms for biofilm formation in C. acetobutylicum were proposed.

2021-07-30 | PXD021161 | Pride

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