Fig. 5
From: Telomeric retrotransposons show propensity to form G-quadruplexes in various eukaryotic species
Telomeres with intercalated transposable elements containing PQS. Schematic representation of telomeric sequence structure in various species in which specific retrotransposons insert into canonical short telomeric repeats. All the elements belong to 4 LINE clades (indicated on the right). The PQS orientation is in relation to the respective element (PQS + means that the G-rich sequence is on the coding strand). The sequences in parenthesis represent both the telomerase-synthesized short tandem repeats as well as the terminal 3´ ssDNA overhang. TAS stands for telomere associated sequences