Fig. 7.

Quantitative comparison of the photosynthetic apparatus in the proteomes of CpcD^Ala and CpcD^Asp mutants and the wild-type. Proteins from cultures grown vegetatively (Grw.), in chlorosis for 6 d (Chlor.), or recovered from chlorosis (Res.; 48 h resuscitation) were extracted, digested with trypsin, dimethylated, and analyzed by mass spectroscopy. The relative abundances of the peptides of the mutants and wild-type were compared. Quantified peptide ratios (log₂) of photosynthetic proteins were visualized in a heatmap (left panel: protein ratio CpcD^Ala/WT; right panel: protein ratio CpcD^Asp/WT). Proteins with lower abundance in CpcD mutants (protein ratio ≤ 0) are indicated by magenta, and proteins with higher abundance in CpcD mutants (protein ratio ≥ 0) are indicated by green.