Figure 2.
RF2 Protein Accumulates in Mitochondria.
(A) Homogenate (Hg), purified chloroplastic (Ch), microsomal (Ms), cytosolic (Cy), and mitochondrial (Mt) fractions of Ky21 seedlings were subjected to SDS-PAGE and stained with Coomassie blue.
(B) A duplicate gel was transferred to a nitrocellulose membrane and reacted with affinity-purified anti-RF2 antibodies.
(C) Protein extracts from isolated mitochondria of the inbred line Ky21 were treated with Triton X-100 and papain as indicated, subjected to SDS-PAGE, transferred to a nitrocellulose membrane, and reacted with affinity-purified anti-RF2 antibodies.
(D) Purified mitochondria from Ky21 seedlings were subjected to sonication and centrifugation to isolate the soluble and membrane fractions and then subjected to immunoblot analysis. Mt, purified mitochondria; Inf, insoluble fraction; Sf, soluble fraction.