ProteoStorm: An Ultrafast Metaproteomics Database Search Framework.
ProteoStorm: An Ultrafast Metaproteomics Database Search Framework.
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DOI:
10.1016/j.cels.2018.08.009
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发表时间:
2018-10-24
期刊:
影响因子:
9.3
通讯作者:
Bafna V
中科院分区:
文献类型:
--
作者:
Beyter D;Lin MS;Yu Y;Pieper R;Bafna V
Shotgun metaproteomics has potential to reveal the functional landscape of microbial communities, but lacks appropriate methods for complex samples with unknown compositions. In the absence of prior taxonomic information, tandem mass spectra would be searched against large pan-microbial databases, which requires heavy computational workload and reduces sensitivity. We present ProteoStorm, an efficient database search framework for large-scale metaproteomics studies, which identifies high-confidence peptide-spectrum matches (PSMs) while achieving a two to three orders-of-magnitude speedup over popular tools. A reanalysis of a urinary tract infection (UTI) dataset of 110 individuals revealed a complex pattern of polymicrobial expression, including sub-types of urinary tract infections, cases of bacterial vaginosis, and evidence of no underlying disease. Importantly, compared to the initial UTI study that restricted the search database to a manually-curated list of 20 genera, ProteoStorm identified additional genera that were previously unreported, including a case of infection with the rare pathogen Propionimicrobium. In the absence of prior taxonomic information, tandem mass spectra would be searched against large pan-microbial databases, requiring heavy computational workload. We present ProteoStorm, an efficient database search framework for large-scale metaproteomics studies, achieving a two to three orders-of-magnitude speedup over popular tools, while maintaining high sensitivity. A reanalysis of a urinary tract infection (UTI) dataset revealed complex pattern of polymicrobial expression and previously unreported rare pathogens.
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