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LipidBlast in silico tandem mass spectrometry database for lipid identification

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TLDR
This work provides a freely available computer-generated tandem mass spectral library of 212,516 spectra covering 119,200 compounds from 26 lipid compound classes, including phospholipids, glycerolipid, bacterial lipoglycans and plant glycolipids.
Abstract
Current tandem mass spectral libraries for lipid annotations in metabolomics are limited in size and diversity. We provide a freely available computer-generated tandem mass spectral library of 212,516 spectra covering 119,200 compounds from 26 lipid compound classes, including phospholipids, glycerolipids, bacterial lipoglycans and plant glycolipids. We show platform independence by using tandem mass spectra from 40 different mass spectrometer types including low-resolution and high-resolution instruments.

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“Bioinformatics” 특집을 내면서

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MS-DIAL: data-independent MS/MS deconvolution for comprehensive metabolome analysis.

TL;DR: For a reversed-phase LC-MS/MS analysis of nine algal strains, MS-DIAL using an enriched LipidBlast library identified 1,023 lipid compounds, highlighting the chemotaxonomic relationships between theAlgal strains.
Journal ArticleDOI

Untargeted Metabolomics Strategies-Challenges and Emerging Directions.

TL;DR: This Critical Insight comments on the identification process of LC-MS-based untargeted metabolomics studies—specifically in mammalian systems, focusing on the ability to accurately identify metabolites.
Journal ArticleDOI

Searching molecular structure databases with tandem mass spectra using CSI:FingerID.

TL;DR: This work presents CSI:FingerID, which combines fragmentation tree computation and machine learning for searching molecular structure databases using tandem MS data of small molecules, and is shown to improve on the competing methods for computational metabolite identification by a considerable margin.
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Feature-based molecular networking in the GNPS analysis environment.

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TL;DR: Feature-based molecular networking (FBMN) as discussed by the authors is an analysis method in the Global Natural Products Social Molecular Networking (GNPS) infrastructure that builds on chromatographic feature detection and alignment tools.
References
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“Bioinformatics” 특집을 내면서

TL;DR: Assessment of medical technology in the context of commercialization with Bioentrepreneur course, which addresses many issues unique to biomedical products.
Journal ArticleDOI

Target-decoy search strategy for increased confidence in large-scale protein identifications by mass spectrometry

TL;DR: This work clarifies the preferred methodology by addressing four issues based on observed decoy hit frequencies: the major assumptions made with this database search strategy are reasonable, concatenated target-decoy database searches are preferable to separate target and decoydatabase searches, and the theoretical error associated with target-Decoy false positive (FP) rate measurements can be estimated.
Journal ArticleDOI

Lipid extraction by methyl-tert-butyl ether for high-throughput lipidomics

TL;DR: In this paper, the methyl-tert-butyl ether (MTBE) extraction method was used for shotgun profiling of lipid species, and the results showed that the MTBE protocol delivered similar or better recoveries of species of most major lipid classes compared with the "gold-standard" Folch or Bligh and Dyer recipes.
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Which are the best metrics to annotate tandem mass spectra against a database on untarf¡geted metabolomics?

The paper does not provide information on the best metrics to annotate tandem mass spectra against a database in untargeted metabolomics.