Involved in succinate export with YjjP. Both proteins are required for export (PubMed:29395959). Participates in succinate export, but also in the export of other dicarboxylates, such as fumarate and malate (PubMed:29395959). Contributes to succinate production under both aerobic and anaerobic conditions, and increases fumarate and malate production during anaerobic succinate production (PubMed:29395959). The transporter is composed of YjjB and YjjP. YjjPB constitutes a split-type ThrE family transporter. Belongs to the ThrE exporter (TC 2.A.79) family.