MCPH1 interacts with E2F1. MCPH1 interacts with E2F1. (A,B) HEK293 cells were left untreated (No tx) or treated with 300 ng/ml NCS for 4 h or 2 μM adriamycin.

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MCPH1 interacts with E2F1. MCPH1 interacts with E2F1. (A,B) HEK293 cells were left untreated (No tx) or treated with 300 ng/ml NCS for 4 h or 2 μM adriamycin (Adr) for 24 h. The cells were collected for immunoprecipitation (IP) using a rabbit MCPH1 (A) or mouse E2F1 antibody (B) or a control IgG followed by immunoblotting (IB) as indicated. Input represents 10% of lysates added to each IP reaction. (C) Schematic structure of MCPH1 protein. (D–F) 293T cells were co‐transfected with Myc‐tagged wild‐type or mutant MCPH1 along with E2F1, E2F2 or E2F3. The next day, cells were collected for IP with anti‐Myc beads followed by immunoblotting. (G,H) 293T or NIH3T3 cells were co‐transfected with YFP1‐E2F1, YFP1‐E2F1(1–150) or YFP1‐E2F1(151–437) and YFP2‐MCPH1, or a control YFP1‐zipper (containing a zipper domain derived from GCN4) and YFP2‐MCPH1. The next day, cells were fixed and nuclei were stained with Hoechst 33258. (I) Cellular lysates of 293T cells in (H) were analysed for expression of YFP1‐E2F1 or its deletional mutants and YFP2‐MCPH1 using a GFP antibody for immunoblotting. BRCT, BRCA1 carboxy‐terminal; GAPDH, glyceraldehyde‐3‐phosphate dehydrogenase; GFP, green fluorescent protein; HEK, human embryonic kidney cells; MCPH1, microcephalin; NCS, neocarzinostatin; YFP, yellow fluorescent protein. Shan‐Zhong Yang et al. EMBO Rep. 2008;9:907-915 © as stated in the article, figure or figure legend