Download MendeleyStructure of the Bacillus Subtilis D-Aminopeptidase Dppa Reveals a Novel Self-Compartmentalizing Protease
Remaut, H., Bompard-Gilles, C., Goffin, C., Frere, J.M., Van Beeumen, J.(2001) Nat Struct Biol 8: 674
- PubMed: 11473256
- DOI: https://doi.org/10.1038/90380
- Primary Citation of Related Structures:
1HI9 - PubMed Abstract:
Bacillus subtilis DppA is a binuclear zinc-dependent, D-specific aminopeptidase. The X-ray structure of the enzyme has been determined at 2.4 A resolution by a three-wavelength MAD experiment. The structure reveals that DppA is a new example of a 'self-compartmentalizing protease', a family of proteolytic complexes. Proteasomes are the most extensively studied representatives of this family. The DppA enzyme is composed of identical 30 kDa subunits organized in a decamer with 52 point-group symmetry. A 20 A wide channel runs through the complex, giving access to a central chamber holding the active sites. The structure shows DppA to be a prototype of a new family of metalloaminopeptidases characterized by the SXDXEG key sequence.
Organizational Affiliation:
Laboratory of Protein Biochemistry and Protein Engineering, Ghent University, K.L. Ledeganckstraat 35, B-9000 Gent, Belgium.
