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Systems-Level Annotation of a Metabolomics Data Set Reduces 25 000 Features to Fewer than 1000 Unique Metabolites

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Mahieu, Nathaniel G., Patti, Gary J.·2017·Analytical Chemistry

Abstract

SUMMARY When using liquid chromatography/mass spectrometry (LC/MS) to perform untargeted metabolomics, it is now routine to detect tens of thousands of features from biological samples. Poor understanding of the data, however, has complicated interpretation and masked the number of unique metabolites actually being measured in an experiment. Here we place an upper bound on the number of unique metabolites detected in Escherichia coli samples analyzed with one untargeted metabolomic method. We first group multiple features arising from the same analyte, which we call “degenerate features”, using a context-driven annotation approach. Surprisingly, this analysis revealed thousands of previously unreported degeneracies that reduced the number of unique analytes to ~2,961. We then applied an orthogonal approach to remove non-biological features from the data by using the 13 C-based credentialing technology. This further reduced the number of unique analytes to less than 1,000.

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Metadata

Authors
Mahieu, N. G., & Patti, G. J.
Venue
Analytical Chemistry
Published
2017-09-15
Volume
89
Issue
19
Pages
10397-10406
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W2725788675
Cited by
320
References
44
FWCI
12.81
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Systems-Level Annotation of a Metabolomics Data Set Reduces 25 000 Features to Fewer than 1000 Unique Metabolites. https://app.cochat.ai/papers/10.1021/acs.analchem.7b02380
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Mahieu, N. G., & Patti, G. J. (2017). Systems-Level Annotation of a Metabolomics Data Set Reduces 25 000 Features to Fewer than 1000 Unique Metabolites. Analytical Chemistry. https://doi.org/10.1021/acs.analchem.7b02380

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