Structural Insights into Mdn1, an Essential AAA Protein Required for Ribosome Biogenesis.
Structural Insights into Mdn1, an Essential AAA Protein Required for Ribosome Biogenesis.
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DOI:
10.1016/j.cell.2018.09.015
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发表时间:
2018-10-18
期刊:
影响因子:
64.5
通讯作者:
Kapoor TM
中科院分区:
文献类型:
--
作者:
Chen Z;Suzuki H;Kobayashi Y;Wang AC;DiMaio F;Kawashima SA;Walz T;Kapoor TM
Mdn1 is an essential AAA (ATPase Associated with various Activities) protein that removes assembly factors from distinct precursors of the ribosomal 60S subunit. However, Mdn1’s large size (~5000aa) and its limited homology to other well-studied proteins have restricted our understanding of its remodeling functions. Here, we present structures for S. pombe Mdn1 in the presence of AMPPNP at up to ~4Å, or ATP plus Rbin-1, a chemical inhibitor, at ~8Å. These data reveal that Mdn1’s MIDAS domain is tethered to its ring-shaped AAA domain through an ~20nm long structured linker and a flexible ~500aa Asp/Glu-rich motif. We find that the MIDAS domain, which also binds other ribosome-assembly factors, docks onto the AAA ring in a nucleotide state-specific manner. Together, our findings reveal how conformational changes in the AAA ring can be directly transmitted to the MIDAS domain and thereby drive the targeted release of assembly factors from ribosomal 60S-subunit precursors.
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影响因子:
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作者:
Kelley LA;Mezulis S;Yates CM;Wass MN;Sternberg MJ
通讯作者:
Sternberg MJ
影响因子:
16.8
作者:
Barrio-Garcia, Clara;Thoms, Matthias;Hurt, Ed
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Hurt, Ed
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Ludtke, Steven J.
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
DOI:
10.1126/science.aao0464
发表时间:
2017-11-03
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Puchades C;Rampello AJ;Shin M;Giuliano CJ;Wiseman RL;Glynn SE;Lander GC
通讯作者:
Lander GC