Fig. 6: Sequence variations of SH-D regions in JB strains.

a Schematic illustration of homologous block and box sequences in the SH-D regions in 972SD4 and PomBase-972. Note that sequences of pale blue boxes, ε–η, in the SU regions are shared by multiple subtelomeres in some of JB strains; and thus, they are defined as SH (see Fig. 6d–h, blue boxes). ORFs of the tlh genes located in block II are indicated by blue arrows. b Schematics of the SH-D sequences in strain JB22 (972) in common blocks and boxes. Sequences of indicated blocks and boxes exhibit at least 90% identities with those of PomBase-972. Total length of each SH-D region is indicated. c Schematics of the SH-D sequences in strain JB760. Black boxes indicate common sequences that are shared by some other JB strains but not found in 972 strains. Note that the sequence of θ is homologous with that of SAS (see main text and Supplementary Fig. 1 for the details). Contigs 1–3 are the same as those in Fig. 4c, respectively. Boxes in rainbow color [1]–[8], SH-P-like sequences; “?”, sequence with <90% identity but substantial similarity with the corresponding segment, block or box (E-value < 10⁻¹⁰ in NCBI nucleotide BLAST [blastn] search); blue triangle, shorter length of the corresponding segment, block or box; gray dotted line, no sequence information available; blocks or boxes with gradation, unreliable sequence information with less than five reads. d Schematics of the SH-D sequences in strain JB1174. Inverted, opposite sequence direction from that in the corresponding block or box in 972; blue box, sequence shared by multiple subtelomeres as SH in some JB strains; dark gray box, sequence that has not been found in PomBase and not shared by the other JB strains; orange triangle, longer length of the corresponding block or box. e Schematics of the SH-D sequences in strain JB934. f Schematics of the SH-D sequences in strain JB858. Contig 1 is the same as that in Fig. 4f. Shaded box with red lines, an insertion of a part of mitochondrial genome. g Schematics of the SH-D sequences in strain JB873. h Schematics of the SH-D sequences in strain JB1197.