Fig. 1.

EDC cross-linking of Psb27 and CP43. Concentration-dependent production of cross-linked species at 58 kDa is shown. His27△ctpAPSII complex was treated with EDC at various concentrations, and immunoblots were probed with anti-Myc antibodies that recognize the Myc epitope on the tagged Psb27 protein (A) or anti-CP43 antibodies (B). EDC concentrations are shown at the top of each blot. The locations of molecular mass standards are shown on the left. Cross-linked products and the parent polypeptides are identified on the right.