Table I. Comparison of cell number, dry weight, Chl, and protein content between wild-type and ΔndbC mutant cells

The number of wild-type and ΔndbC cells in 1 mL at the OD of 1, dry weight (mg per OD or mg per 107 cells), Chl amount (µg Chl per OD or µg Chl per 107 cells), and total protein amount (mg per OD or mg per 107 cells) are shown. Values per OD are means ± sd; n = 3 to 4, and values per cell number are calculated based on these. Asterisks indicate statistically significant differences between the wild type and the ΔndbC mutant (P < 0.05).

ConditionsCells 107/mLDry WeightChlProteinDry WeightChlProtein
OD750 = 1mg per ODµg per ODmg per ODmg per 107 cellsµg per 107 cellsmg 107 cells
Wild type LC18.4 ± 1.215.4 ± 0.254.2 ± 0.080.30 ± 0.000.290.230.016
ΔndbC LC8.5 ± 1.01*3.7 ± 0.41*4.1 ± 0.110.27 ± 0.01*0.440.480.031
Wild type HC17.6 ± 1.304.6 ± 0.303.9 ± 0.030.23 ± 0.020.260.220.013
ΔndbC HC7.2 ± 1.19*4.5 ± 0.163.6 ± 0.04*0.20 ± 0.010.630.500.028