Probable self-resistance protein; part of the gene cluster that mediates the biosynthesis of enfumafungin, a glycosylated fernene-type triterpenoid with potent antifungal activity, mediated by its interaction with beta-1,3-glucan synthase and the fungal cell wall (PubMed:30051576). Does not encode any steps in enfumafungin biosynthesis, but because it is related to a fungal cell wall structural proteins, it might play a role in self-resistance toward enfumafungin (Probable). Belongs to the SED1 family.