FR901379 is primarily used in the field of medical research, particularly in the study of fungal infections. It acts as a potent antifungal agent, targeting specific pathways in fungal cells to inhibit their growth and proliferation. This makes it a valuable compound in developing treatments for infections caused by resistant fungal strains. Additionally, its mechanism of action is studied to understand its potential in combination therapies, enhancing the efficacy of existing antifungal drugs. Researchers also explore its application in agricultural settings to combat fungal pathogens that affect crops, contributing to improved yield and food security.