Crystal Structures of Salinosporamide A (NPI-0052) and B (NPI-0047) in Complex with the 20S Proteasome Reveal Important Consequences of beta-Lactone Ring Opening and a Mechanism for Irreversible Binding.
Groll, M., Huber, R., Potts, B.C.(2006) J.Am.Chem.Soc. 128: 5136-5141
- PubMed: 16608349 
- DOI: 10.1021/ja058320b
- PubMed Abstract: 
The crystal structures of the yeast 20S proteasome core particle (CP) in complex with Salinosporamides A (NPI-0052; 1) and B (4) were solved at <3 angstroms resolution. Each ligand is covalently bound to Thr1O(gamma) via an ester linkage to the carbo ...