%0 Journal Article
%T A bifunctional archaeal protein that is a component of 30S ribosomal subunits and interacts with C/D box small RNAs
%A Andrea Ciammaruconi
%A Stefania Gorini
%A Paola Londei
%J Archaea
%D 2008
%I Hindawi Publishing Corporation
%R 10.1155/2008/472786
%X We have identified a novel archaeal protein that apparently plays two distinct roles in ribosome metabolism. It is a polypeptide of about 18 kDa (termed Rbp18) that binds free cytosolic C/D box sRNAs in vivo and in vitro and behaves as a structural ribosomal protein, specifically a component of the 30S ribosomal subunit. As Rbp18 is selectively present in Crenarcheota and highly thermophilic Euryarchaeota, we propose that it serves to protect C/D box sRNAs from degradation and perhaps to stabilize thermophilic 30S subunits.
%U http://www.hindawi.com/journals/arch/2008/472786/