Structural highlights
Function[SEC14_YEAST] Required for transport of secretory proteins from the Golgi complex. Catalyzes the transfer of phosphatidylinositol and phosphatidylcholine between membranes in vitro. Essential for viability and secretion. Publication Abstract from PubMedInvasive fungal infections are accompanied by high mortality rates that range up to 90%. At present, only three different compound classes are available for use in the clinic, and these often suffer from low bioavailability, toxicity, and drug resistance. These issues emphasize an urgent need for novel antifungal agents. Herein, we report the identification of chemically versatile benzamide and picolinamide scaffolds with antifungal properties. Chemogenomic profiling and biochemical assays with purified protein identified Sec14p, the major phosphatidylinositol/phosphatidylcholine transfer protein in Saccharomyces cerevisiae, as the sole essential target for these compounds. A functional variomics screen identified resistance-conferring residues that localized to the lipid-binding pocket of Sec14p. Determination of the X-ray co-crystal structure of a Sec14p-compound complex confirmed binding in this cavity and rationalized both the resistance-conferring residues and the observed structure-activity relationships. Taken together, these findings open new avenues for rational compound optimization and development of novel antifungal agents. Target Identification and Mechanism of Action of Picolinamide and Benzamide Chemotypes with Antifungal Properties.,Pries V, Nocker C, Khan D, Johnen P, Hong Z, Tripathi A, Keller AL, Fitz M, Perruccio F, Filipuzzi I, Thavam S, Aust T, Riedl R, Ziegler S, Bono F, Schaaf G, Bankaitis VA, Waldmann H, Hoepfner D Cell Chem Biol. 2017 Dec 21. pii: S2451-9456(17)30434-8. doi:, 10.1016/j.chembiol.2017.12.007. PMID:29307839[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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