Protein family size distribution. Distribution of the size of the PANDIT protein families. Black line corresponds to a power law P(T) ~ T-γ, with a fitted exponent γ = 1.6 ± 0.1. The inset shows the complementary cumulative distribution F (T), that is, the probability of finding family sizes larger than T.
Herrada et al. BMC Evolutionary Biology 2011 11:155 doi:10.1186/1471-2148-11-155