Outer membrane fusion is not affected by OXPHOS defects.

<p>Wild-type and mutant cells expressing fluorescent proteins targeted to the outer membrane (GFPOM, RFPOM) were conjugated and mitochondrial outer membrane fusion was analyzed by fluorescence microscopy after the indicated times (<b>A, B</b>) or after 4 hours (<b>C</b>). <b>A:</b> Kinetics of Total (T), Partial (P) and No fusion (N). <b>B, C:</b> Comparison of total fusion as a function of time (<b>B</b>) or of Total, Partial and No fusion after 4 hours (<b>C</b>). The dashed line indicates the proportion in wild-type cells. Dashed line: proportion of total fusion in wild-type cells.