protein transport across the cell outer membrane protein secretion by the type VIII secretion system http://purl.obolibrary.org/obo/go.owl T8SS Protein secretion through the outer membrane via the mechanism used for the secretion of curli subunits. [database_cross_reference: PMID:24080089][database_cross_reference: PMID:19299134] This term is defined so as to leave open the possibility that things other than curli subunits are secreted via same secretory system as that used by curli subunits.