Journal of the American Chemical Society p. 2383 - 2388 (2016)
Update date:2022-08-17
Topics:
Colosimo, Dominic A.
Macmillan, John B.
Discoipyrroles A-D (DPA-DPD) are recently discovered natural products produced by the marine bacterium Bacillus hunanensis that exhibit anticancer properties in vitro. Initial biosynthetic studies demonstrated that DPA is formed in the liquid fermentation medium of B. hunanensis from three secreted metabolites through an unknown but protein-independent mechanism. The increased identification of natural products that depend on non-enzymatic steps creates a significant need to understand how these different reactions can occur. In this work, we utilized 15N-labeled starting materials and continuous high-sensitivity 1H-15N HMBC NMR spectroscopy to resolve scarce reaction intermediates of the non-enzymatic discoipyrrole reaction as they formed in real time. This information guided supplemental experiments using 13C- and 18O-labeled materials to elucidate the details of DPA's non-enzymatic biosynthesis, which features a highly concerted pyrrole formation and necessary O2-mediated oxidation. We have illustrated a novel way of using isotopically enhanced two-dimensional NMR spectroscopy to interrogate reaction mechanisms as they occur. In addition, these findings add to our growing knowledge of how multicomponent non-enzymatic reactions can occur through inherently reactive bacterial metabolites.
View MoreShenzhen JYMed Technology Co.,Ltd.
website:http://www.jymedtech.com
Contact:+86-755-26612112
Address:RM1-105, Shenzhen Bio-incubator Base, 10 Gaoxin C Avc 1st, Nanshan District, Shenzhen, GD, China, 518057
Contact:+49-9398-993127
Address:Untertorstr. 27
Chengdu Gelipu Biotechnology Co., Ltd.
website:http://www.glp-china.com
Contact:86-28-82610909
Address:chegndu
Contact:0519-85170101-802
Address:Fifth Floor,B of Beihua Buliding,520 Road of Science and Education City,Changwu middle road NO.801,Wujin District,Changzhou,Jiangsu province
Baoding City Light Industry And Textiles Imp.& Exp. Corp. Chemical Department.
Contact:86-312-3262436
Address:NO.658 CHAOYANG SOUTH STREET,BAODING CITY HEBEI CHINA
Doi:10.1016/0020-1693(95)90082-H
()Doi:10.1016/j.ejmech.2015.11.038
(2016)Doi:10.1016/j.jallcom.2013.12.121
(2014)Doi:10.1002/(SICI)1522-2675(19990908)82:9<1502::AID-HLCA1502>3.0.CO;2-J
(1999)Doi:10.1021/ac60031a013
(1949)Doi:10.1107/S0108270101006229
(1912)