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ABSTRACT: Urban excess sludge anaerobic digestion metagenomic sequencing

PROVIDER: PRJNA982404 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24902100_1.fastq.gz	Fastqsanger.gz
	SRR24902100_2.fastq.gz	Fastqsanger.gz
	SRR24902055_1.fastq.gz	Fastqsanger.gz
	SRR24902055_2.fastq.gz	Fastqsanger.gz
	SRR24902056_1.fastq.gz	Fastqsanger.gz

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Project description:Two parallel anaerobic digestion lines were designed to match a "bovid-like" digestive structure. Each of the lines consisted of two Continuous Stirred Tank Reactors placed in series and separated by an acidic treatment step. The first line was inoculated with industrial inocula whereas the second was seeded with cow digestive tract contents. After three month of continuous sewage sludge feeding, samples were recovered for shotgun metaproteomic and DNA-based analysis. Strikingly, protein inferred and 16S rDNA tags based taxonomic community profiles were not fully consistent. Principal Component analysis however revealed a similar clustering pattern of the samples, suggesting that reproducible methodological and/or biological factors underlie this observation. The performances of the two digestion lines did not differ significantly and the cow derived inocula did not establish in the reactors. A low throughput metagenomic dataset (3.4x106 reads, 1.1 Gb) was also generated for one of the samples. It allowed a substantial increase of the analysis depth (increase of the spectral identification rate). For the first time, a high level of proteins expressed by members of the "Candidatus Competibacter" group is reported in an anaerobic digester, a key microbial player in environmental bioprocess communities.

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