Inaugural Article: Structure and function of the yeast U-box-containing ubiquitin ligase Ufd2p.
Tu, D., Li, W., Ye, Y., Brunger, A.T.(2007) Proc Natl Acad Sci U S A 104: 15599-15606
- PubMed: 17890322 
- DOI: 10.1073/pnas.0701369104
- Primary Citation of Related Structures:  
2QJ0, 2QIZ - PubMed Abstract: 
Proteins conjugated by Lys-48-linked polyubiquitin chains are preferred substrates of the eukaryotic proteasome. Polyubiquitination requires an activating enzyme (E1), a conjugating enzyme (E2), and a ligase (E3). Occasionally, these enzymes only assemble short ubiquitin oligomers, and their extension to full length involves a ubiquitin elongating factor termed E4 ...