Crystal Structure of Yeast Yer010Cp, a Knotable Member of the Rraa Protein Family.
Leulliot, N., Quevillon-Cheruel, S., Graille, M., Schiltz, M., Blondeau, K., Janin, J., Van Tilbeurgh, H.(2005) Protein Sci 14: 2751
- PubMed: 16195557 
- DOI: https://doi.org/10.1110/ps.051684005
- Primary Citation of Related Structures:  
2C5Q - PubMed Abstract: 
We present here the structure of Yer010c protein of unknown function, solved by Multiple Anomalous Diffraction and revealing a common fold and oligomerization state with proteins of the regulator of ribonuclease activity A (RraA) family. In Escherichia coli, RraA has been shown to regulate the activity of ribonuclease E by direct interaction. The absence of ribonuclease E in yeast suggests a different function for this family member in this organism. Yer010cp has a few supplementary secondary structure elements and a deep pseudo-knot at the heart of the protein core. A tunnel at the interface between two monomers, lined with conserved charged residues, has unassigned residual electron density and may constitute an active site for a yet unknown activity.
Organizational Affiliation: 
Institut de Biochimie et de Biophysique Moléculaire et Cellulaire (CNRS-UMR 8619), Université Paris-Sud, Bâtiment 430, 91405 Orsay, France. Nicolas.leulliot@ibbmc.u-psud.fr