Figure S1. SPIN1 Tudor domain interaction with H3K4me3 and H4K20me3. A) Representative array images of SPIN1 Tudor domain showing peptide binding indicated in red (right panel). The peptide tracer is shown in green (left panel). Positive antibody controls are outlined in white. B) Western blot results of peptide pull-down experiments with SPIN1 tandem Tudor domain. The input is shown in Lane 1 and the corresponding bound fraction is shown in Lanes 2–8. C) Western blot results of peptide pull-down experiments with whole cell lysates derived from transiently transfected HEK 293T cells (GFP-SPIN1, 2A, 2B, 3 and 4).