Download MendeleyCrystal structure of YrrB: A TPR protein with an unusual peptide-binding site
Han, D., Oh, J., Kim, K., Lim, H., Kim, Y.(2007) Biochem Biophys Res Commun 360: 784-790
- PubMed: 17624311
- DOI: https://doi.org/10.1016/j.bbrc.2007.06.129
- Primary Citation of Related Structures:
2Q7F - PubMed Abstract:
YrrB is a hypothetical protein containing a tetratricopeptide repeat (TPR) domain from a Gram-positive bacterium, Bacillus subtilis. We determined YrrB structure in the C2 space group to 2.5A resolution, which is the first TPR structure of the Gram-positive bacterium B. subtilis. In contrast to other known TPR structures, the concave surface of the YrrB TPR domain is composed of the putative peptide-binding pocket lined with positively-charged residues. This unique charge distribution reveals that YrrB can interact with partner proteins via an unusual TPR-mediated interaction mode, compared to that of other TPR-containing structures. Functional annotation using genomics analysis suggested that YrrB may be an interacting mediator in the complex formation among RNA sulfuration components. No proteins containing a TPR domain have been identified in the biosynthesis of sulfur-containing biomolecules. Thus, YrrB could play a new role as a connecting module among those proteins in the conserved gene cluster for RNA sulfuration.
Organizational Affiliation:
College of Medicine, Seoul National University, Yongon-Dong, Seoul 110-799, Republic of Korea.
