Download MendeleySolution structure of a membrane-anchored ubiquitin-fold (MUB) protein from Homo sapiens.
de la Cruz, N.B., Peterson, F.C., Lytle, B.L., Volkman, B.F.(2007) Protein Sci 16: 1479-1484
- PubMed: 17567738
- DOI: https://doi.org/10.1110/ps.072834007
- Primary Citation of Related Structures:
2GOW - PubMed Abstract:
The protein Bc059385, whose solution structure is reported here, is the human representative of a recently identified family of membrane-anchored ubiquitin-fold (MUB) proteins. Analysis of their similarity to ubiquitin indicates that homologous amino acid residues in MUBs form a hydrophobic surface very similar to the recognition patch surrounding Ile-44 in ubiquitin. This suggests that MUBs may interact with proteins containing an alpha-helical motif similar to those of some ubiquitin binding domains. A disordered loop common to MUBs may also provide a second protein interaction site. From the available data, it is probable that this protein is prenylated and associated with the membrane. With <20% identity to ubiquitin, the MUB family further expands the sequence space that maps to the beta-grasp fold, and adds membrane localization to its list of functional roles.
Organizational Affiliation:
Department of Biochemistry and Center for Eukaryotic Structural Genomics, Medical College of Wisconsin, Milwaukee 53226, USA.
