Figure 3From: Role of apoptosis-inducing factor (AIF) in programmed nuclear death during conjugation in Tetrahymena thermophilaTranslocation of AIF from mitochondria to parental macronucleus. A. Map of expression vector, named AKgfpTtAIF, with neomycin resistance cassette (Neor-cassette), 5'UTR and ORF of AIF, codon-optimized GFP (GFP-cassette), replication origin derived from Stylonychia lemnae and telomeres from Tetrahymena. Neomycin resistance is expressed under control of β-tubulin promoter. Before biolistic bombardment, the plasmid was digested with SfiI to expose telomere sequences on both ends. B. After biolistic bombardment, cytoplasmic localization of AIF::GFP was detected using α-GFP. This fluorescent pattern was coincided with MitoTracker Green (MTG). No-bombardment indicates non-transformed wild-type cell. Scale bar in photograph indicates 10 μm. C. Translocation of AIF::GFP was visualized with α-GFP antibodies. White arrows indicate parental macronucleus. Overlay represents fusion image of blue (nuclei) and red (AIF::GFP) fluorescence. Scale bar in photograph indicates 10 μm. D. Fluorescence microscopy of living cells expressing AIF::GFP at the stage of MacIIp. Red arrows indicate AIF::GFP in parental macronuclei. pMa denotes parental macronucleus.Back to article page