Interplay Between Acetylation and Ubiquitination of Imitation Switch Chromatin Remodeler Isw1 Confers Multidrug Resistance in

poses a threat to human health, but anticryptococcal therapy is hampered by the emergence of drug resistance, whose underlying mechanisms remain poorly understood. Herein, we discovered that Isw1, an imitation switch chromatin remodeling ATPase, functions as a master modulator of genes responsible for and multidrug resistance in . Cells with the disrupted gene exhibited profound resistance to multiple antifungal drugs. Mass spectrometry analysis revealed that Isw1 is both acetylated and ubiquitinated, suggesting that an interplay between these two modification events exists to govern Isw1 function. Mutagenesis studies of acetylation and ubiquitination sites revealed that the acetylation status of Isw1 coordinates with its ubiquitination processes at Isw1 and Isw1 through modulating the interaction between Isw1 and Cdc4, an E3 ligase. Additionally, clinical isolates of overexpressing the degradation-resistant allele showed impaired drug-resistant phenotypes. Collectively, our studies revealed a sophisticated acetylation-Isw1-ubiquitination regulation axis that controls multidrug resistance in .