Methylotroph Quorum Sensing Signal Identification by Inverse Stable Isotopic Labeling.
Methylotroph Quorum Sensing Signal Identification by Inverse Stable Isotopic Labeling.
复制标题
反相稳定同位素标记鉴定甲基营养菌群体感应信号
DOI:
10.1021/acschembio.1c00329
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发表时间:
2021-08-20
影响因子:
4
通讯作者:
Puri AW
中科院分区:
文献类型:
--
作者:
Cummings DA Jr;Snelling AI;Puri AW
Natural products are an essential source of bioactive compounds. Isotopic labeling is an effective way to identify natural products that incorporate a specific precursor; however, this approach is limited by the availability of isotopically-enriched precursors. We used an inverse stable isotopic labeling approach to identify natural products by growing bacteria on a 13C-carbon source and then identifying 12C-precursor incorporation by mass spectrometry. We applied this approach to methylotrophs, ecologically important bacteria predicted to have significant yet underexplored biosynthetic potential. We demonstrate this method identifies N-acyl homoserine lactone quorum sensing signals produced by diverse methylotrophs grown on three different one-carbon compounds. We then apply this approach to simultaneously detect five previously unidentified signals produced by a methylotroph, and link these compounds to their synthases. We envision that this method can be used to identify other natural product classes synthesized by methylotrophs and other organisms that grow on relatively inexpensive 13C-carbon sources.
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