National Institutes of Health/National Cancer Institute
R01 GM66958
米国
National Institutes of Health/National Cancer Institute
R01 GM117102
米国
National Institutes of Health/National Cancer Institute
R01 GM099604
米国
引用
ジャーナル: Sci Rep / 年: 2019 タイトル: Yeast R2TP Interacts with Extended Termini of Client Protein Nop58p. 著者: Ge Yu / Yu Zhao / Shaoxiong Tian / Jay Rai / Huan He / John Spear / Duncan Sousa / Jinbo Fan / Hong-Guo Yu / Scott M Stagg / Hong Li / 要旨: The AAA + ATPase R2TP complex facilitates assembly of a number of ribonucleoprotein particles (RNPs). Although the architecture of R2TP is known, its molecular basis for acting upon multiple RNPs ...The AAA + ATPase R2TP complex facilitates assembly of a number of ribonucleoprotein particles (RNPs). Although the architecture of R2TP is known, its molecular basis for acting upon multiple RNPs remains unknown. In yeast, the core subunit of the box C/D small nucleolar RNPs, Nop58p, is the target for R2TP function. In the recently observed U3 box C/D snoRNP as part of the 90 S small subunit processome, the unfolded regions of Nop58p are observed to form extensive interactions, suggesting a possible role of R2TP in stabilizing the unfolded region of Nop58p prior to its assembly. Here, we analyze the interaction between R2TP and a Maltose Binding Protein (MBP)-fused Nop58p by biophysical and yeast genetics methods. We present evidence that R2TP interacts largely with the unfolded termini of Nop58p. Our results suggest a general mechanism for R2TP to impart specificity by recognizing unfolded regions in its clients.