Fig. 2
From: Telomeric retrotransposons show propensity to form G-quadruplexes in various eukaryotic species
Identification of main PQS carriers among repetitive DNA in D. melanogaster genome. A Genomic proportion and PQS content of 5 main repeat types. B Analysis of the main interspersed repeats. Top: genomic proportion and PQS counts in individual types of interspersed elements. Bottom: mutual orientation of individual types of interspersed elements in the genome with respect to PQS orientation. The orange/yellow colors represent elements with sense PQS orientation—the G-rich sequence is on the coding strand, the blue colors represent elements with antisense PQS orientation (the repeat orientation is with respect to the chromosome, the orientation of PQS is with respect to the element in which PQS resides). C Analysis (as in B) of HTT harboring Jockey-clade elements. D GAG protein domain based phylogram shows the PQS distribution per reference full-length Jockey elements (red numbers, Additional file 2: Tab. S3). Note that G2 is not included due to the lack of GAG domain. Maximum likelihood phylogenetic tree was constructed using PhyML v3.0 with BioNJ used to build up the starting tree. Bootstrap support values higher than 50 are given