This family contains plant transposases which are putative members of the PIF / Ping-Pong family [1][2].

1: P instability factor: an active maize transposon system associated with the amplification of Tourist-like MITEs and a new superfamily of transposases. Zhang X, Feschotte C, Zhang Q, Jiang N, Eggleston WB, Wessler SR; Proc Natl Acad Sci U S A. 2001;98:12572-12577. PMID:11675493

2: The plant MITE mPing is mobilized in anther culture. Kikuchi K, Terauchi K, Wada M, Hirano HY; Nature. 2003;421:167-170. PMID:12520303