Figure 3.

Protein profiles of chromoplast and chloroplast fractions. SDS-PAGE (12.5%) and Coomassie blue staining of fractionated red bell pepper fruit chromoplasts (lanes 1–4), pea seedling chloroplasts (lanes 5–7), and pepper seedling chloroplasts (lane 8). Lanes T, Total proteins; lanes S, stromal proteins; lanes TM, total membrane proteins; and lanes MN, NaOH-extracted membranes. Each lane contained 10 μg of protein except MN, which is equivalent to M prior to extraction. Positions of ChrA and ChrB are indicated.