Figure 5. ΔBRIP1 exhibits defective ability to interact with BRCA1.
293T cells were transfected with Myc-wtBRIP1-, Myc-ΔBRIP1- or GFP-encoding plasmids. Lysates (lanes 1-3) and corresponding Myc-IPs (lanes 4-8) were analyzed by W-blotting with the indicated antibodies. BRCA1 and BARD1 were detected in Myc-wtBRIP1 complexes even when the IP was diluted up to 10 fold (lanes 4-6), whereas they were both barely detectable in undiluted Myc-ΔBRIP1 complexes (lane 7). IP from GFP-transfected cells (lane 8) served as control.