Fig. 2.

PSI phosphorylation. a Identical amounts of PSI complexes isolated from WT and mutant (psae1-3 stn7-1, psad1-1 stn7-1, psae1-3, psad1-1) leaves were fractionated by SDS-PAGE and visualized by Coomassie Blue staining. Positions of subunits previously identified by immunodetection (Jensen et al. 2000) are indicated. b Western analyses for pThr residues were performed on identical amounts of PSI complexes derived from WT and mutant leaves. c A similar filter to that shown in (b), but probed with an Lhcb2-specific antibody