Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein uL30A / Large ribosomal subunit protein uL6A / Large ribosomal subunit protein uL22A / Large ribosomal subunit protein uL24A / Large ribosomal subunit protein eL33A / Large ribosomal subunit protein eL36A / Large ribosomal subunit protein eL15A ...Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein uL30A / Large ribosomal subunit protein uL6A / Large ribosomal subunit protein uL22A / Large ribosomal subunit protein uL24A / Large ribosomal subunit protein eL33A / Large ribosomal subunit protein eL36A / Large ribosomal subunit protein eL15A / Large ribosomal subunit protein eL22A / Large ribosomal subunit protein uL5A / Large ribosomal subunit protein eL27A / Large ribosomal subunit protein eL31A / Large ribosomal subunit protein eL20A / Large ribosomal subunit protein eL43A / Large ribosomal subunit protein uL14A / Large ribosomal subunit protein uL2A / Large ribosomal subunit protein eL18A / Large ribosomal subunit protein eL19A / Large ribosomal subunit protein uL29A / Large ribosomal subunit protein uL4A / Large ribosomal subunit protein eL30 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein eL8A / Ribosome assembly protein 4 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL13A / Ribosome assembly factor MRT4 / Large ribosomal subunit protein eL14A / Ribosome biogenesis protein RPF2 / Large ribosomal subunit protein eL32 / UPF0642 protein YBL028C / Exosome complex protein LRP1 / Nuclear GTP-binding protein NUG1 / Ribosome biogenesis protein NSA2 / ATP-dependent RNA helicase DOB1 / Large ribosomal subunit protein eL37A / Large ribosomal subunit protein eL38 / rRNA-processing protein CGR1 / Pescadillo homolog / Nucleolar GTP-binding protein 2 / Large ribosomal subunit protein eL34A / Large ribosomal subunit protein eL6A / Large ribosomal subunit protein eL21A / Nucleolar GTP-binding protein 1 / Probable metalloprotease ARX1 / Ribosome biogenesis protein RLP24 / Bud site selection protein 20 / Regulator of ribosome biosynthesis / Exosome complex exonuclease RRP6 / Eukaryotic translation initiation factor 6 / Large ribosomal subunit protein eL13A 類似検索 - 構成要素
ジャーナル: Science / 年: 2018 タイトル: Structure of the nuclear exosome captured on a maturing preribosome. 著者: Jan Michael Schuller / Sebastian Falk / Lisa Fromm / Ed Hurt / Elena Conti / 要旨: The RNA exosome complex processes and degrades a wide range of transcripts, including ribosomal RNAs (rRNAs). We used cryo-electron microscopy to visualize the yeast nuclear exosome holocomplex ...The RNA exosome complex processes and degrades a wide range of transcripts, including ribosomal RNAs (rRNAs). We used cryo-electron microscopy to visualize the yeast nuclear exosome holocomplex captured on a precursor large ribosomal subunit (pre-60) during 7-to-5.8 rRNA processing. The cofactors of the nuclear exosome are sandwiched between the ribonuclease core complex (Exo-10) and the remodeled "foot" structure of the pre-60 particle, which harbors the 5.8 rRNA precursor. The exosome-associated helicase Mtr4 recognizes the preribosomal substrate by docking to specific sites on the 25 rRNA, captures the 3' extension of the 5.8 rRNA, and channels it toward Exo-10. The structure elucidates how the exosome forms a structural and functional unit together with its massive pre-60 substrate to process rRNA during ribosome maturation.