Drp1-independent wholesale mitochondrial fission after Parkin recruitment to mitochondria. Live imaging of Tet-ON: ΔOTC-expressing Drp1 KO HeLa cells expressing YFP-Parkin (green), labeled with TMRM (red), treated with DOX for 48 h, and labeled with TMRM (red). Time is indicated. Frame rate, four frames/s.