This family consists of REP proteins from Dictyostelium (Slime molds). REP protein is likely involved in transcription regulation and control of DNA replication, specifically amplification of plasmid at low copy numbers. The formation of homomultimers may be required for their regulatory activity [1].

1: Mechanism of action of the Rep protein from the Dictyostelium Ddp2 plasmid family. Shammat IM, Welker DL; Plasmid 1999;41:248-259. PMID:10366530