Figure 1: An example immunoblot of samples of Synechococcus elongatus PCC
7942 (lanes 1-4) and Anabaena sp. PCC 7120 (lanes 5-8). Molecular weight
markers (MagicMark XP, Invitrogen) are in lane 9. Recombinant PsbA protein
standards are loaded in lanes 10-12 at 0.05 pmoles, 0.15 pmoles and 0.45 pmoles.
Figure 2: Standard curve for the blot in Figure 1. Picomoles of quantitated standard is plotted on the X-axis versus the adjusted signal volume obtained on the Y-axis.