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 β subunit of F1-ATPase. Here, we report that the crystal structure of the RNA-binding domain of rho (rho130) at 1.55 Å confirms that rho130 contains the oligosaccharide/oligonucleotide-binding (OB) fold, a five stranded β-barrel. The β-barrel of rho!30 is also surprisingly similiar to the N-terminal β-barrel of Fl ATPase, extending the applicability of Fl ATPase as a structural model for hexameric rho.
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Allison, T., Wood, T., Briercheck, D. et al. Crystal structure of the RNA-binding domain from transcription termination factor rho. Nat Struct Mol Biol 5, 352–356 (1998). https://doi.org/10.1038/nsb0598-352
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DOI: https://doi.org/10.1038/nsb0598-352
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