Preparation of yeast mitochondria and in vitro assay of respiratory chain complex activities

The aim of the protocol is to obtain an enriched fraction of intact mitochondria from the yeast Saccharomyces cerevisiae to perform quantitative determination of the activity of respiratory chain enzymes. All the strains used to perform this protocol are derivatives of W303 (K699: MATa ade2-1 trp1-1 can1-100 leu2-3,112 his3-11,15 ura3-52).