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. 2019 Jan 29;8:e44036. doi: 10.7554/eLife.44036

Figure 6. Differential chromatin in the 5–6 and 7–4 neuroblast lineages is correlated with differential Hb occupancy.

(A–C) Dam:Hb binds within neuroblast-specific open chromatin. (A) Dam signal (open chromatin) in NB 5–6 (blue lines) and NB 7–4 (green lines) at loci where Dam:Hb binding is enriched in NB5-6 over NB7-4. Note that the chromatin is more open in NB5-6 than in NB7-4 at these loci. (B) Dam signal (open chromatin) in NB 7–4 (green lines) and NB 5–6 (blue lines) at loci where Dam:Hb binding is enriched in NB7-4 over NB5-6. Note that the chromatin is more open in NB7-4 than in NB5-6 at these loci. (C) Dam signal (open chromatin) at loci similarly occupied by Hb in both NB5-6 and NB7-4 lineages. (D) The top five Dam:Hb enriched loci in NB5-6 are in regions of NB5-6 open chromatin (blue tracks); however, in NB7-4 these loci are not in open chromatin (Dam; green tracks), and are not bound by Dam:Hb. Rows from top to bottom: genomic locus, Dam:Hb enrichment in NB5-6, Dam only enrichment in two replicates in NB5-6, Dam:Hb enrichment in NB7-4, and Dam only enrichment in two replicates in NB7-4. Data range for IP3K1, rut, pbl is 0–109; data range for CG13131 and mspo is 0–15. (E) The top five Dam:Hb enriched loci in NB7-4 are in regions of open chromatin in NB7-4 (green tracks); however, in NB5-6 these loci are not in open chromatin (Dam; blue tracks) and are not bound by Dam:Hb. Rows from top to bottom: genomic locus, Dam:Hb enrichment in NB5-6, Dam only enrichment in two replicates in NB5-6, Dam:Hb enrichment in NB7-4, and Dam only enrichment in two replicates in NB7-4. Data range for sqz, InR and en is 0–35; data range for lov and H15 is 0–20.

Figure 6.

Figure 6—figure supplement 1. Dam:Hb binding is biased towards regions of open chromatin.

Figure 6—figure supplement 1.

Dam binding (open chromatin) is correlated with Dam:Hb binding in each neuroblast lineage. (A) Dam signal (open chromatin) of the two replicates of NB5-6 is plotted at the region of Dam:Hb occupancy in the NB5-6 lineage. (B) Dam signal (open chromatin) of the two replicates of NB7-4 is plotted at the region of Dam:Hb occupancy in the NB7-4 lineage. Note the correspondence of open chromatin (increased Dam signal) at the regions of Hb occupancy in both NB lineages. These results are consistent with preferential Hb binding at regions of open chromatin. (C) Schematic showing preferential binding of Dam:Hb at sites of open chromatin.