Relationship between mean and variance in protein expression.

<p>a) Protein mean and variance values in <i>S. cerevisiae</i> plotted against each other in log-scale in arbitrary fluorescence, with corresponding Pearson's correlation coefficient. b) Distribution of residual variance values across the <i>S. cerevisiae</i> dataset. Red bars indicate residual variance value with Z-scores over 2 standard deviations from the mean.