Fig. 2

A summary of AA abundances in human, plants and animals. AAs are represented by single-letter codes: A - alanine, C - cysteine, D - aspartic Acid, E - glutamic Acid, F - phenylalanine, G - glycine, H - histidine, I - isoleucine, K - lysine, L - leucine, M - methionine, N - asparagine, P - proline, Q - glutamine, R - arginine, S - serine, T - threonine, V - valine, W - tryptophan and Y - tyrosine. a. Sorted percentages of AAs in human proteins. The percentages of 20 AAs for all proteins in the human proteome (Uniport: UP000005640) were sorted and plotted from the largest to the smallest percentage. b. Sorted percentages of EAAs in human proteins. The arbitrary number of proteins in the human proteome is plotted with a log scale for clarity, especially EAA enrichment information. c. A 3D-bubble plotting for AA percentages in the proteomes of human, plants and animals. Human AA abundances are represented as the width of bubbles. d. Enriched GO-MF terms (p < 0.001) for lysine ERPs