Measuring FSC for 35 protein families. The left plot shows the FSC with respect to the length of the aligned proteins. The x-intercept of a fitted line trace back to an approximate protein length of 23 amino acids. It also shows an absence of points in the lower right corner. The right plot shows the "density" (measure of FSC/aligned sequence length).
Durston et al. Theoretical Biology and Medical Modelling 2007 4:47 doi:10.1186/1742-4682-4-47