Insights into the mechanism of progressive RNA degradation by the archaeal exosome.
Navarro, M.V.A.S., Oliveira, C.C., Zanchin, N.I., Guimaraes, B.G.(2008) J Biol Chem 283: 14120-14131
- PubMed: 18353775 
- DOI: 10.1074/jbc.M801005200
- Primary Citation of Related Structures:  
2PNZ, 2PO0, 2PO1, 2PO2 - PubMed Abstract: 
Initially identified in yeast, the exosome has emerged as a central component of the RNA maturation and degradation machinery both in Archaea and eukaryotes. Here we describe a series of high-resolution structures of the RNase PH ring from the Pyrococcus abyssi exosome, one of them containing three 10-mer RNA strands within the exosome catalytic chamber, and report additional nucleotide interactions involving positions N5 and N7 ...