Gro binding to the regulatory regions of ato and rho genes depends on E(spl) in eye discs. (A, C) diagrams of ChIP-chip or ChIP-seq on the ato or rho gene from modENCODE, and the regions for ChIP are marked with green lines. Gro ChIP analysis indicates significant binding of Gro to the regulatory regions of ato (ato-1, ato-2) and rho (rho-1, rho-2, rho-3) in comparison to a negative control region (NC) in cells from WT eye discs. However the Gro binding activities on these regions are much weaker in the cells from E(spl) mutant eye discs (B and D).