Figure 2From: Gains of ubiquitylation sites in highly conserved proteins in the human lineageTiming of the gains of ubiquitylated lysine in the human lineage. Numbers of gains of ubiquitylated lysine residues in the human lineage of the mammalian phylogenetic tree are shown. The number of gains is shown on each branch where the lysine residue emerged in the ancestor of the corresponding clade.Back to article page