a) FLAG-tagged MBD2 or MBD3 were co-expressed with HA-GATAD2B (wild type (WT) or L180P) by in vitro transcription-translation (IVT) in a rabbit reticulocyte lysate. b) The FLAG-tagged C1-C2 domains of CHD3, CHD4 or CHD5 was co-expressed with HA-GATAD2B (WT, R414Q, C420R, C420S, and G406R) in IVTs. In all experiments, FLAG-fusion proteins were immobilized on αFLAG affinity beads and used as baits to pull down the co-expressed HA-GATAD2B. As a negative control, wild-type (WT) HA-GATAD2B was added to beads to which no FLAG fusion protein had been immobilized. In each case, 10% of inputs and 50% of elutions were loaded on an SDS-PAGE and proteins were detected by Western blot, using αHA and/or αFLAG antibodies.
# = degradation product of FLAG-MBD2.