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Cited by 316

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

Assignment of Endogenous Substrates to Enzymes by Global Metabolite Profiling

Saghatelian, Alan, Trauger, Sunia A., Want, Elizabeth J., Hawkins, Edward G., Siuzdak, Gary, Cravatt, Benjamin F.·2004·Biochemistry

Abstract

Enzymes regulate biological processes through the conversion of specific substrates to products. Therefore, of fundamental interest for every enzyme is the elucidation of its natural substrates. Here, we describe a general strategy for identifying endogenous substrates of enzymes by untargeted liquid chromatography-mass spectrometry (LC-MS) analysis of tissue metabolomes from wild-type and enzyme-inactivated organisms. We use this method to discover several brain lipids regulated by the mammalian enzyme fatty acid amide hydrolase (FAAH) in vivo, including known signaling molecules (e.g., the endogenous cannabinoid anandamide) and a novel family of nervous system-enriched natural products, the taurine-conjugated fatty acids. Remarkably, the relative hydrolytic activity that FAAH exhibited for lipid metabolites in vitro was not predictive of the identity of specific FAAH substrates in vivo. Thus, global metabolite profiling establishes unanticipated connections between the proteome and metabolome that enable assignment of an enzyme's unique biochemical functions in vivo.

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Metadata

Authors
Saghatelian, A., Trauger, S. A., Want, E. J., Hawkins, E. G., Siuzdak, G., & Cravatt, B. F.
Venue
Biochemistry
Published
2004-10-19
Volume
43
Issue
45
Pages
14332-14339
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2139846209
Cited by
316
References
27
FWCI
5.58
Type
journal article
Language
en
Open access
closed

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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