FIG. 9.

Schematic structure of CrREM1, non-LTR and LTR retrotransposon with PHD and chromodomain. The boxes represent the ORFs in which the positions of the different domains are shown. PBS, primer binding sites; PPT, polypurine tract; NA, nucleic acid binding motif; ZF, zinc finger motif type C2H2; EN, endonuclease; CP, capsid-like protein; GAG, retro-Gag domain; PR, protease; RT, retrotranscriptase; RH, RNase H; IN, integrase; 5′-UTR, 5′ untranslated region; 3′-UTR, 3′ untranslated region; IR, inverted direct repeats; DR, flanking target direct repeat; CHD, chromatin organization modifier domain; and PHD, PHD-finger domain. The transcription senses of the LTR retrotransposon, CrREM1 primary transcript, and ORF3 transcript are shown by arrows.