Download MendeleyCrystal structure of heat shock locus V (HslV) from Escherichia coli.
Bochtler, M., Ditzel, L., Groll, M., Huber, R.(1997) Proc Natl Acad Sci U S A 94: 6070-6074
- PubMed: 9177170
- DOI: https://doi.org/10.1073/pnas.94.12.6070
- Primary Citation of Related Structures:
1NED - PubMed Abstract:
Heat shock locus V (HslV; also called ClpQ) is the proteolytic core of the ATP-dependent protease HslVU in Escherichia coli. It has sequence similarity with the beta-type subunits of the eukaryotic and archaebacterial proteasomes. Unlike these particles, which display 72-point symmetry, it is a dimer of hexamers with 62-point symmetry. The crystal structure of HslV at 3.8-A resolution, determined by isomorphous replacement and symmetry averaging, shows that in spite of the different symmetry of the particle, the fold and the contacts between subunits are conserved. A tripeptide aldehyde inhibitor, acetyl-Leu-Leu-norleucinal, binds to the N-terminal threonine residue of HslV, probably as a hemiacetal, relating HslV also functionally to the proteasomes of archaea and eukaryotes.
Organizational Affiliation:
Max-Planck-Institut für Biochemie, Am Klopferspitz 18a, D-82152 Martinsried, Germany.
