Improving the production of micafungin precursor FR901379 in <i>Coleophoma empetri</i> using heavy-ion irradiation and its mechanism analysis.

ABSTRACT: Micafungin is a semisynthetic echinocandin antifungal agent derived from fungal natural product FR901379 produced by Coleophoma empetri, facing challenges in biomanufacturing due to poor chassis performance and unclear high-yield mechanisms. In this study, the mutagenic effects of heavy-ion beam and how fungi repaired damage show that compared to the wild-type strain, nonhomologous end-joining pathway deficient mutants were more sensitive to heavy ion radiation, resulting in higher lethality rates and more mutations from the same radiation dose. Moreover, mutants obtained through two rounds of heavy-ion irradiation mutagenesis produced 1.1 g/L of FR901379, representing a remarkable increase of 253.7%. Compared to the parent strain, the mutants displayed noticeable differences in mor

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12096658 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature