Download MendeleySolution structure of ribosomal protein S28E from Methanobacterium thermoautotrophicum.
Wu, B., Yee, A., Pineda-Lucena, A., Semesi, A., Ramelot, T.A., Cort, J.R., Jung, J.W., Edwards, A., Lee, W., Kennedy, M., Arrowsmith, C.H.(2003) Protein Sci 12: 2831-2837
- PubMed: 14627743
- DOI: https://doi.org/10.1110/ps.03358203
- Primary Citation of Related Structures:
1NE3 - PubMed Abstract:
The ribosomal protein S28E from the archaeon Methanobacterium thermoautotrophicum is a component of the 30S ribosomal subunit. Sequence homologs of S28E are found only in archaea and eukaryotes. Here we report the three-dimensional solution structure of S28E by NMR spectroscopy. S28E contains a globular region and a long C-terminal tail protruding from the core. The globular region consists of four antiparallel beta-strands that are arranged in a Greek-key topology. Unique features of S28E include an extended loop L2-3 that folds back onto the protein and a 12-residue charged C-terminal tail with no regular secondary structure and greater flexibility relative to the rest of the protein. The structural and surface resemblance to OB-fold family of proteins and the presence of highly conserved basic residues suggest that S28E may bind to RNA. A broad positively charged surface extending over one side of the beta-barrel and into the flexible C terminus may present a putative binding site for RNA.
Organizational Affiliation:
Northeast Structural Genomics Consortium, Division of Molecular and Structural Biology, Ontario Cancer Institute and Department of Medical Biophysics, University of Toronto, Toronto, Ontario M5G 2M9, Canada.
