Fig. 4. Sls1p is a component of the mitochondrial nucleoid.
Mitochondrial lysates and nucleoid fractions were prepared as described under “Experimental Procedures.” V5-tagged Sls1p was detected by Western analysis using an anti-V5 antibody (top panel). A separate gel was run and silver-stained to visualize the amount of protein loaded (bottom panel). Lanes 1–4 are the mitochondrial lysates prior to fractionation, and lanes 5–8 are the purified nucleoid fractions. The sample analyzed is indicated at the top of each lane: MSR107 (wt); MSR107 treated with DNase I (wt +DNase); MSR110(Δ3) and MSR107 without the energy regenerating system (wt −energy).