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SDS/PAGE of PS II complexes. Lane 1, molecular weight markers; lane 2, spinach chloroplasts; lane 3, Synechocystis; lane 4, A. marina. CP47 (filled circles), CP43 (open circles), D2 (open squares), D1 (closed squares), and the cyt b 559 α-subunit (open triangles) are indicated. Asterisk indicated the D1/D2 heterodimer. LMW, low molecular-weight proteins.
