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Gram-Negative Bacterial Isolates

ABSTRACT: Genome Sequencing and Assembly of International Space Station (ISS) Bacterial Isolates

PROVIDER: PRJNA805242 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR18253483_1.fastq.gz	Fastqsanger.gz
	SRR18253484_1.fastq.gz	Fastqsanger.gz
	SRR18253484_2.fastq.gz	Fastqsanger.gz
	SRR18253485_1.fastq.gz	Fastqsanger.gz

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Proteomic characterization of Aspergillus fumigatus isolated from air and surfaces of the International Space Station

Project description:The on-going Microbial Observatory Experiments on the International Space Station (ISS) revealed the presence of various microorganisms that may be affected by the distinct environment of the ISS. The low-nutrient environment combined with enhanced irradiation and microgravity may trigger changes in the molecular suit of microorganisms leading to increased virulence and resistance of microbes. Proteomic characterization of two Aspergillus fumigatus strains, ISSFT-021 and IF1SW-F4, isolated from HEPA filter debris and cupola surface of the ISS, respectively, is presented, along with a comparison to experimentally established clinical isolates Af293 and CEA10. In-depth analysis highlights variations in the proteome of both ISS-isolated strains when compared to the clinical strains. Proteins up-regulated in ISS isolates were involved in oxidative stress response, and carbohydrate and secondary metabolism. This report provides insight into possible molecular adaptation of filamentous fungi to the unique ISS environment. Lastly, an attempt was made to elucidate plausible causes of the enhanced virulence of both ISS-isolated A. fumigatus strains.

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carbapenem-resistant gram-negative bacterial isolates

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Effects of a Closed Space Environment on Gene Expression in Hair Follicles of Astronauts in the International Space Station

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Influence of International Space Station Conditions on Fungal ‘Omics’ in Aspergillus nidulans

Project description:This study presents the first global genomic, proteomic, and secondary metabolomic characterization of the filamentous fungus, Aspergillus nidulans, following growth on the International Space Station (ISS). The investigation included the A. nidulans wild-type and 3 mutant strains, two of which were genetically engineered to enhance secondary metabolite (SM) production. Whole genome sequencing (WGS) revealed that ISS conditions altered the A. nidulans genome in specific regions. In strain CW12001, which features overexpression of the SM global regulator laeA, ISS conditions induced a point mutation that resulted in the loss of the laeA stop codon. Differential expression of proteins involved in stress response, carbohydrate metabolic processes, and SM biosynthesis was observed. ISS conditions significantly decreased prenyl xanthone production in the wild-type strain and increased asperthecin production in LO1362 and CW12001, which are deficient in a major DNA repair mechanism. Together, these data provide valuable insights into the genetic and molecular adaptation mechanism of A. nidulans to the spacecraft environment and present many economic benefits.

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Genomic and Proteomic characterization of Aspergillus niger isolated from the International Space Station

Project description:Genomic and proteomic characterization of the Aspergillus niger isolate, JSC-093350089, collected from U.S. segment surfaces of the International Space Station (ISS) is reported, along with a comparison to the experimentally established strain ATCC 1015. Whole-genome sequencing of JSC-093350089 revealed enhanced genetic variance when compared to publicly available sequences of A. niger strains. Analysis of the isolate’s proteome revealed significant differences in the molecular phenotype of JSC-093350089, including increased abundance of proteins involved in the A. niger starvation response, oxidative stress resistance, cell wall integrity and modulation, and nutrient acquisition. Together, these data reveal the existence of a distinct strain of A. niger onboard the ISS and provide insight into the molecular phenotype that is selected for by melanized fungal species inhabiting spacecraft environments.

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ISS bacterial species WGS

Project description:WGS bacterial species isolated from the International Space Station. Genome sequencing and assembly

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Project description:Microbial isolates recovered from the International Space Station

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