Figure 2.

Distribution of potential G4-forming sequences over the 5S rDNA unit of A. thaliana. 5S rDNA sequence data (Campell et al., 1992) were used to analyze pqsfinder scores. Two putative G4 sites starting in positions 257 and 414 were identified with pqsfinder showing the scores of 37 and 33, respectively. The GP including both external and internal elements, 5S rRNA gene (5S) and transcription termination site (TTS) are depicted using the data from Cloix et al. (2003).