Updated FTP location. 293T cells were transfected with pCMV CEBPbeta LAP2 isoform. Two days post transfection, nuclear extracts were subjected to Co immunoprecipitation with mouse anti-CEBPbeta (clone H-7) or mouse control IgG using Protein G Dynabeads. After washing with RIPA buffer, beads were subjected to Mass spectrometry based protein identification to find interacting partners of CEBPbeta.