- An aureobasidin A resistance gene isolated from Aspergillus is a homolog of yeast AUR1, a gene responsible for inositol phosphorylceramide (IPC) synthase activity. Kuroda, M., Hashida-Okado, T., Yasumoto, R., Gomi, K., Kato, I., Takesako, K. Mol. Gen. Genet. (1999)