FIGURE 3.
Characterization of HCT116 mitochondrial repair complex for LP-BER. A, repair of unlabeled THF-containing oligo3 duplex with [α-32P]dTTP and two different amounts of mitochondrial APE1-FLAG or control FLAG immunocomplex. B, monitoring of LP-BER with APE1-FLAG immunocomplex with [α-32P]dNTPs. M, marker (43 nt). control, no protein. Western analysis of mitochondrial APE1-FLAG immunocomplex (C). The absence of APE1 (D) and presence of PCNA (E) in FEN-1 immunocomplex isolated from mitochondrial and nuclear extracts, respectively. Lysate, 50 μg of mitochondrial or nuclear extracts.