EboA (eustigmatophyte/bacterial operon A) belongs to a broadly distributed system of six proteins. The ebo system in general appears to involved in trafficking certain of certain natural product precursors whose biosynthesis requires export at least as far as the periplasm. Scytonemin is an example of one natural product whose biosynthesis requires an Ebo system.
Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",