PiggyBac Transposable Element Derived 5 is an enzyme that in humans is encoded by the PGBD5gene. PGBD5 is a DNA transposase related to the ancient PiggyBac transposase first identified in the cabbage looper moth, Trichoplusia ni. The gene is believed to have been domesticated over 500 million years ago in the common ancestor of cephalochordates and vertebrates. The putative catalytic triad of the protein composed of three aspartic acid residues is conserved among PGBD5-like genes through evolution,, and is distinct from other PiggyBac-like genes. PGBD5 has been shown to be able to transpose DNA in a sequence-specific, cut-and-paste fashion. PGBD5 has also been proposed to mediate site-specific DNA rearrangements in human tumors.
↑ 3.03.1Pavelitz T, Gray LT, Padilla SL, Bailey AD, Weiner AM (November 2013). "PGBD5: a neural-specific intron-containing piggyBac transposase domesticated over 500 million years ago and conserved from cephalochordates to humans". Mobile DNA. 4 (1): 23. doi:10.1186/1759-8753-4-23. PMID24180413.
↑ 4.04.1Henssen AG, Henaff E, Jiang E, Eisenberg AR, Carson JR, Villasante CM, Ray M, Still E, Burns M, Gandara J, Feschotte C, Mason CE, Kentsis A (September 2015). "Genomic DNA transposition induced by human PGBD5". eLife. 4. doi:10.7554/eLife.10565. PMID26406119.