Abstract:
:Metabolic engineering uses enzymes to produce small molecules with industrial, pharmaceutical, and energy applications. However, efforts to optimize enzymatic pathways for commercial production are limited by the throughput of assays for quantifying metabolic intermediates and end products. We developed a multiplexed method for profiling CoA-dependent pathways that uses a cysteine-terminated peptide to covalently capture CoA-bound metabolites. Captured metabolites are then rapidly separated from the complex mixture by immobilization onto arrays of self-assembled monolayers and directly quantified by SAMDI mass spectrometry. We demonstrate the throughput of the assay by characterizing the cell-free synthesis of HMG-CoA, a key intermediate in the biosynthesis of isoprenoids, collecting over 10,000 individual spectra to map more than 800 unique reaction conditions. We anticipate that our rapid and robust analytical method will accelerate efforts to engineer metabolic pathways.
journal_name
Sci Advjournal_title
Science advancesauthors
O'Kane PT,Dudley QM,McMillan AK,Jewett MC,Mrksich Mdoi
10.1126/sciadv.aaw9180subject
Has Abstractpub_date
2019-06-05 00:00:00pages
eaaw9180issue
6issn
2375-2548pii
aaw9180journal_volume
5pub_type
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