Fig 6. Size distribution of the 153 human proteins and 75 yeast proteins that encode the peptides detected in the peptidomic analyses.

Each group of proteins was sorted by length and plotted by rank (x-axis). Units of the y-axis are amino acid residues. The average length of human proteins found in the peptidomic analysis is 253 amino acids and the median length is 199 amino acids. The average length of yeast proteins found in the peptidomic analysis is 353 amino acids and the median length is 310 amino acids.