The structure of trp RNA-binding attenuation protein.
Antson, A.A., Otridge, J., Brzozowski, A.M., Dodson, E.J., Dodson, G.G., Wilson, K.S., Smith, T.M., Yang, M., Kurecki, T., Gollnick, P.(1995) Nature 374: 693-700
- PubMed: 7715723 
- DOI: https://doi.org/10.1038/374693a0
- Primary Citation of Related Structures:  
1WAP - PubMed Abstract: 
The crystal structure of the trp RNA-binding attenuation protein of Bacclius subtilis solved at 1.8 A resolution reveals a novel structural arrangement in which the eleven subunits are stabilized through eleven intersubunit beta-sheets to form a beta-wheel with a large central hole. The nature of the binding of L-tryptophan in clefts between adjacent beta-sheets in the beta-wheel suggests that this binding induces conformational changes in the flexible residues 25-33 and 49-52. It is argued that upon binding, the messenger RNA target forms a matching circle in which eleven U/GAG repeats are bound to the surface of the protein ondecamer modified by the binding of L-tryptophan.
Organizational Affiliation: 
Department of Chemistry, University of York, UK.