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. 2017 Apr;23(4):446–456. doi: 10.1261/rna.059642.116

FIGURE 2.

FIGURE 2.

Retrotransposon family MutsuDr linked to 5S rRNA loci. (A) 5′ half of the two rRNA types that include all nucleotide differences. Indicated are the sequence-specific MutsuDr 3′ target sites in the maternal- (blue) and somatic-type (red) 5S rDNA sequence. Small arrows show the insertion sites. (B) Tree of the different MutsuDr retrotransposon subfamilies constructed based on their genomic consensus DNA sequences. (C) An example of the maternal-type 5S rRNA genome organization on chromosome 4 (Supplemental File SF8): expressed 5S rRNA gene copies (5Sseq variant number, blue arrow), nonexpressed 5S rRNA gene copies (NE, gray arrow), and MutsuDr retrotransposon elements (brown arrow). The 5S RNA NE elements right downstream from a Mutsu element are remnants of the 5S rRNA gene that was disrupted by the insertion of the retrotransposon. (D) Relative expression of MutsuDr RNA (brown) and MutsuDr piRNAs (green) as indicated by the fraction of the sequencing reads found for each type. (Embryos) The combined samples as indicated in Figure 1C; (adult FT) adult-female tail.