Crystal structure of the RNA-binding domain from transcription termination factor rho.
Allison, T.J., Wood, T.C., Briercheck, D.M., Rastinejad, F., Richardson, J.P., Rule, G.S.(1998) Nat Struct Biol 5: 352-356
- PubMed: 9586995
- DOI: https://doi.org/10.1038/nsb0598-352
- Primary Citation of Related Structures:
1A62 - PubMed Abstract:
Transcription termination factor rho is an ATP-dependent hexameric helicase found in most eubacterial species. The Escherichia coli rho monomer consists of two domains, an RNA-binding domain (residues 1-130) and an ATPase domain (residues 131-419). The ATPase domain is homologous to the beta subunit of F1-ATPase. Here, we report that the crystal structure of the RNA-binding domain of rho (rho130) at 1.55 A confirms that rho130 contains the oligosaccharide/oligonucleotide-binding (OB) fold, a five stranded beta-barrel. The beta-barrel of rho130 is also surprisingly similar to the N-terminal beta-barrel of F1 ATPase, extending the applicability of F1 ATPase as a structural model for hexameric rho.