SEARCH Articles Figures Tables COP9 ubiquitin ligases E3 ubiquitin ligase Ligase Ligases Phosphoprotein-ubiquitin ligase Phosphoprotein-ubiquitin ligase complexes The SCF Ubiquitin E3 Ligase The Structural Biology of Ubiquitin-Protein Ligases Ubiquitin ligase XIAP Ubiquitin ligases Ubiquitin protein ligase Ubiquitin protein ligases Ubiquitin, ubiquitination Ubiquitin-conjugating ligases Ubiquitination