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Moraxella catarrhalis clonal genomic diversity

ABSTRACT: Moraxella catarrhalis clonal genomic diversity

PROVIDER: PRJEB29515 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR2868820_1.fastq.gz	Fastqsanger.gz
	ERR2868820_2.fastq.gz	Fastqsanger.gz
	ERR2868821_1.fastq.gz	Fastqsanger.gz
	ERR2868821_2.fastq.gz	Fastqsanger.gz
	ERR2868822_1.fastq.gz	Fastqsanger.gz

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Gene Expression Profile of Moraxella catarrhalis Grown in Pooled Human Sputum

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Analysis of the Zur Regulon of Moraxella catarrhalis

Project description:This series of microarrays explores the genes regulated by the Zur gene of Moraxella catarrhalis.

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Gene Expression Profile of Moraxella catarrhalis Grown in Pooled Human Sputum

Project description:Comparison of the gene expression profile of Moraxella catarrhalis grown in the presence of 20% pooled human sputum in chemically-defined medium relative to Moraxella catarrhalis grown in chemically-defined medium alone. Moraxella catarrhalis ATCC43617 was grown to mid-logarithmic phase either in the presence of 20% pooled human sputum in chemically-defined medium or in chemically-defined medium alone. Total RNA was extracted from bacterial cells exposed to each of these conditions and cDNA was generated for CyDye labelling. 3 biologic replicates were generated and each replicate underwent a dye swap (total of 6 experimental data collections). The gene expression profile reported is that of Moraxella catarrhalis grown in the presence of pooled human sputum in a chemically-defined medium relative to Moraxella catarrhalis grown only in the presence of the chemically-defined medium.

2014-02-02 | E-GEOD-27059 | biostudies-arrayexpress

Moraxella catarrhalis

Project description:Moraxella catarrhalis Genome sequencing

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Project description:Moraxella catarrhalis Genome sequencing

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Identification of genes essential for Moraxella catarrhalis growth under iron-limiting conditions using Genomic Array Footprinting (GAF)

Project description:Iron-sequestration by the human host is a first line defense against respiratory pathogens like Moraxella catarrhalis, which consequently experiences a period of iron-starvation during colonization and infection. We determined the genetic requirements for M. catarrhalis growth during iron-starvation using the high-throughput genome-wide screening technology genomic array footprinting (GAF). To this end, a large marinerT7 transposon mutant library (~28,000 independent transposon mutants) was grown under iron-limiting conditions, achieved by sequestration of iron by 30 µM Desferal (DF30), and under control growth conditions (brain heart infusion broth, DF0). Mutants were recovered at exponential- and the early-stationary growth phase and used for the generation of mutant-specific cDNA probes that were hybridized to custom-designed NimbleGen GAF microarrays. The results described in this study are further discussed in Stefan P.W. de Vries, Peter Burghout, Jeroen D. Langereis, Aldert Zomer, Peter W.M. Hermans, Hester J. Bootsma: Genetic requirements for Moraxella catarrhalis growth under iron-limiting conditions, Molecular Microbiology.

2013-06-06 | GSE41546 | GEO

Characterization of the molecular interplay between Moraxella catarrhalis and human respiratory tract epithelial cells: Expression Moraxella catarrhalis strain BBH18 during adherence to human phanryngeal epithelial Detroit 562 cells

Project description:During the course of infection, respiratory pathogens like Moraxella catarrhalis needs to adhere to epithelial cells of different host niches such as the nasopharynx and lungs. Consequently, efficient adhesion to epithelial cells is considered an important virulence trait of M. catarrhalis. We examined the interaction between human pharyngeal epithelial Detroit 562 cells and M. catarrhalis BBH18 during adherence using a combination of Tn-seq, a genome-wide negative selection screenings technology, and expression profiling of both host and pathogen. The results described in this study are further discussed in Stefan P.W. de Vries, Marc J. Eleveld, Peter W.M. Hermans, Hester J. Bootsma: Characterization of the molecular interplay between Moraxella catarrhalis and human respiratory tract epithelial cells, submitted.

2013-06-27 | GSE47870 | GEO

Characterization of the molecular interplay between Moraxella catarrhalis and human respiratory tract epithelial cells: Expression response of human phanryngeal epithelial Detroit 562 cells to adherent Moraxella catarrhalis strain BBH18

2013-06-27 | GSE47711 | GEO

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Project description:Moraxella catarrhalis Raw sequence reads

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Identification of genes essential for Moraxella catarrhalis growth under iron-limiting conditions using Genomic Array Footprinting (GAF): Expression analysis of directed gene deletion mutants.

Project description:Iron-sequestration by the human host is a first line defense against respiratory pathogens like Moraxella catarrhalis, which consequently experiences a period of iron-starvation during colonization and infection. We determined the genetic requirements for M. catarrhalis growth during iron-starvation using the high-throughput genome-wide screening technology genomic array footprinting (GAF). To further characterize the functional consequences of the gene deletions (GAF identified genes), we determined transcriptome profiles of the wild-type and directed mutant strains during exponential growth in BHI medium. The results described in this study are further discussed in Stefan P.W. de Vries, Peter Burghout, Jeroen D. Langereis, Aldert Zomer, Peter W.M. Hermans, Hester J. Bootsma: Genetic requirements for Moraxella catarrhalis growth under iron-limiting conditions, Molecular Microbiology.

2013-06-06 | GSE41547 | GEO

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