Download MendeleyCrystal structure of the putative adapter protein MTH1859.
Ye, H., Chen, T.C., Xu, X., Pennycooke, M., Wu, H., Steegborn, C.(2004) J Struct Biol 148: 251-256
- PubMed: 15477104
- DOI: https://doi.org/10.1016/j.jsb.2004.06.004
- Primary Citation of Related Structures:
1PM3 - PubMed Abstract:
MTH1859 from Methanobacterium thermoautotrophicum is a 77 residue protein representing a conserved family of functionally uncharacterized proteins. We solved the crystal structure of MTH1859 by single wavelength anomalous diffraction phasing using selenomethionine labeled protein. MTH1859 adopts a mainly anti-parallel all-beta-fold. The beta-sheet is heavily bent to form a U-structure that is closed through a loop. The monomer structure possesses similarities to the photoreaction center (PRC) domain fold, but the protein employs a unique oligomerization scheme. Two monomers of MTH1859 occupy the asymmetric unit and dimerize in a head-to-head fashion. Crystal packing interactions identify a second protein-protein interaction interface at the MTH1859 tails which can simultaneously bind two partner molecules. These interactions lead to the formation of a honeycomb structure and suggest that the family of MTH1859-like proteins might function as adapters for protein complex assembly.
Organizational Affiliation:
Department of Biochemistry, Weill Medical College of Cornell University, 1300 York Avenue, New York, NY 10021, USA.
