Fig. 3
From: Protein length distribution is remarkably uniform across the tree of life
Examples of atypical protein length distributions and distribution heterogeneity between close species. All graphs show the density distribution of protein lengths. The red lines represent the first quartile, median, and third quartile of protein lengths, and the blue lines represent the mean. a, b Examples of proteomes with an overabundance of small proteins (eukaryote Acyrthosiphon pisum (pea aphid) (a), and bacteria Rickettsia rickettsii (b)). c Toxoplasma gondii, an example of a proteome with a high proportion of longer proteins. d–f Example of difference in protein length distributions in the Drosophila genus. Drosophila melanogaster (d) has a canonical protein length distribution shape, and similar distributions exist in other Drosophila species like Drosophila grimshawi (e). Drosophila simulans, however, shows a relative abundance of small proteins (f). An alternative representation with protein length on logarithmic scale is available in Additional File 2: Figure S10