...measured the effect of EP300 knockdown on H3K27ac chromatin occupancy. siRNA EP300 knockdown (Supplemental Fig. 4) blocked VEGFA-stimulated deposition of H3K27ac at NR4A1, HLX, and KDR (Fig. 2B; Supplemental
Fig. 5A). To determine if EP300 histone acetyltransferase catalytic activity, as opposed to other...