1.15 angstrom resolution structure of the proteasome-assembly chaperone Nas2 PDZ domain.
Singh, C.R., Lovell, S., Mehzabeen, N., Chowdhury, W.Q., Geanes, E.S., Battaile, K.P., Roelofs, J.(2014) Acta Crystallogr F Struct Biol Commun 70: 418-423
- PubMed: 24699731 
- DOI: https://doi.org/10.1107/S2053230X14003884
- Primary Citation of Related Structures:  
4O06 - PubMed Abstract: 
The 26S proteasome is a 2.5 MDa protease dedicated to the degradation of ubiquitinated proteins in eukaryotes. The assembly of this complex containing 66 polypeptides is assisted by at least nine proteasome-specific chaperones. One of these, Nas2, binds to the proteasomal AAA-ATPase subunit Rpt5. The PDZ domain of Nas2 binds to the C-terminal tail of Rpt5; however, it does not require the C-terminus of Rpt5 for binding. Here, the 1.15 Å resolution structure of the PDZ domain of Nas2 is reported. This structure will provide a basis for further insights regarding the structure and function of Nas2 in proteasome assembly.
Organizational Affiliation: 
Division of Biology, Kansas State University, 338 Ackert Hall, Manhattan, KS 66506, USA.