title: Macrolactin S, a new antibacterial agent with FabG-inhibitory activity from Bacillus sp. AT28.
abstract: In the course of screening for FabG inhibitors from microbial sources, a new 24-membered ring lactone named macrolactin S, along with the known compound macrolactin B, has been isolated from the mycelium of liquid fermentation cultures of Bacillus sp. AT28. The structure of macrolactin S was determined on the basis of MS and NMR data. Macrolactin S showed a dose-dependent inhibition of Staphylococcus aureus FabG, not inhibiting S. aureus FabI. Also macrolactin S inhibited the growth of S. aureus, Bacillus subtilis, and Escherichia coli.
authors.affiliation: Functional Metabolites Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.
authors.forename: Mi-Jin
authors.initials: MJ
authors.lastname: Sohn
authors.forename: Chang-Ji
authors.initials: CJ
authors.lastname: Zheng
authors.forename: Won-Gon
authors.initials: WG
authors.lastname: Kim
mesh_terms: D000429:Alcohol Oxidoreductases / Q000037:antagonists & inhibitors*; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D001407:Bacillus / Q000737:chemistry* / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects; D020128:Inhibitory Concentration 50; D018942:Macrolides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D013057:Spectrum Analysis; D013211:Staphylococcus aureus / Q000187:drug effects
chemical_list: D000900:Anti-Bacterial Agents; D004791:Enzyme Inhibitors; D018942:Macrolides; C532687:macrolactin S; D000429:Alcohol Oxidoreductases; C023744:acetoacetyl-CoA reductase