This entry represents the HTH domain of human DNA transposase THAP9 which is homologous to Drosophila P-element transposase [1,2]. THAP9 is an active transposase that specifically recognizes the bipartite 5'-TXXGGGX(A/T)-3' consensus motif and mediates transposition [2]. The structure of Drosophila P-element transposase has been solved [1].

1: Structure of a P element transposase-DNA complex reveals unusual DNA structures and GTP-DNA contacts. Ghanim GE, Kellogg EH, Nogales E, Rio DC; Nat Struct Mol Biol. 2019;26:1013-1022. PMID:31659330

2: The human THAP9 gene encodes an active P-element DNA transposase. Majumdar S, Singh A, Rio DC; Science. 2013;339:446-448. PMID:23349291