Protease inhibitors clitocypin and macrocypin are differentially expressed within basidiomycete fruiting bodies

► Mycocypins, clitocypin and macrocypin, show a group specific pattern of expression. ► Clitocypin is uniformly expressed in M. procera and C. nebularis fruiting bodies. ► Macrocypins are differentially expressed in M. procera mature fruiting bodies. ► Heterologous mycocypin promoters are transcriptionally active in Coprinopsis cinerea.