Evolution of gene regulation in ruminants differs between evolutionary breakpoint regions and homologous synteny blocks

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Figure 6.
Figure 6.

A model for the evolution of chromosome rearrangements with gene expression divergence by means of lineage-specific transposable elements (TEs). Chromosome rearrangement boundaries (EBRs) are enriched for lineage-specific TEs. These TEs harbor a higher number of TFBSs than ancestral TEs; therefore, they have a higher affinity for TFs and a stronger influence in gene expression and regulation than those found elsewhere in the genome. This leads to a higher differential expression for orthologous genes between species with and without the gross genomic rearrangement. Brown and green boxes represent ancestral or lineage-specific TEs, respectively. Purple bars represent TFBSs, and black boxes represent genes. Orange bell-shaped curves represent peaks of H3K27ac as functional enhancers, with the height of the bell proportional to the strength of the enhancer.

This Article

  1. Genome Res. 29: 576-589

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