FIGURE 4: Adenylate kinase has a role in the efficiency of size control, but cells lacking Adk1p still adjust their size in response to nutrients.

(A) In most mutants we examined (shown with open circles) size control operates efficiently. The filled square is the wild type value. On the x-axis is the natural logarithm of the normalized birth size values used in Fig. 3 (with the wild type values equal to one), which were obtained from the data in Table 2. These were plotted against their relative growth in size during the G1 phase (kTG1, y-axis). The values we used were the average from the two strain backgrounds. The line is a linear fit obtained with the regression function of Microsoft Excel, from all the strains except those shown in red.

(B-D) Cell size histograms of exponentially and asynchronously proliferating wild type haploid cells of the indicated genotype (all in the Y7092 background) cultured in 1% w/v yeast extract, 2% w/v peptone and the indicated amount of the carbon source shown. The x-axis is cell size and the y-axis is the number of cells.

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