Fig. 1
From: Transcriptional activity of PIF and Pong-like Class II transposable elements in Triticeae
Structure of PIF and Pong-like elements. a General structure of PIF and Pong-like elements with the corresponding ORFs. ORF2 contains a “DDE” motif, a signature consisting of three conserved amino acids. b Comparison of the conserved PIF transposase domain with part of the “DDE” motif from five Triticeae samples and Zea mays. c Alignment of the conserved Pong transposase domain with the “DDE” motif. Triangles represent TIRs and rectangles represent ORFs. Grey rectangle indicates insertion. Primers used for amplification are indicated by bold arrows