Structure of the ubiquitin-activating enzyme loaded with two ubiquitin molecules.
Schafer, A., Kuhn, M., Schindelin, H.(2014) Acta Crystallogr D Biol Crystallogr 70: 1311-1320
- PubMed: 24816100 
- DOI: 10.1107/S1399004714002910
- Primary Citation of Related Structures:  
4NNJ - PubMed Abstract: 
The activation of ubiquitin by the ubiquitin-activating enzyme Uba1 (E1) constitutes the first step in the covalent modification of target proteins with ubiquitin. This activation is a three-step process in which ubiquitin is adenylated at its C-terminal glycine, followed by the covalent attachment of ubiquitin to a catalytic cysteine residue of Uba1 and the subsequent adenylation of a second ubiquitin ...