SILAC mass spectromety for ERG-interacting proteins reveals subunits of BAF complexes.
(A) Schematic of TMPRSS2-ERG gene fusion that results in aberrant ERG expression levels.
(B) Schematic of SILAC mass spectrometry experiment in TMPRSS2-ERG-containing VCaP prostate cancer cells.
(C) SILAC mass-spectrometry screen for ERG interactors reveals significant enrichment of BAF complex subunits. Anti-ERG SILAC hits are plotted as log2-fold change for each experimental replicate. Highlighted are ERG (green) and BAF complex subunit components (red).
(D) Table of mammalian SWI/SNF protein subunits identified in proteomic mass-spectrometry, indicating number of unique peptides, sequence coverage (%), associated p-values, and rank among the full set of enriched proteins.