Members of this family have been implicated in as being involved in an unusual form of DNA transfer (conjugation) in Bacteroides ([1]). The family has been named CtnDOT_TraJ to avoid confusion with other conjugative transfer systems.

1: Transfer region of a bacteroides conjugative transposon, CTnDOT. Bonheyo G, Graham D, Shoemaker NB, Salyers AA; Plasmid 2001;45:41-51. PMID:11319931