Ribosome biogenesis protein YTM1 / Large ribosomal subunit protein uL23 / 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 ...Ribosome biogenesis protein YTM1 / Large ribosomal subunit protein uL23 / 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 eL27A / Large ribosomal subunit protein eL31A / Large ribosomal subunit protein eL20A / Large ribosomal subunit protein uL14A / Large ribosomal subunit protein uL1A / 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 / 27S pre-rRNA (guanosine(2922)-2'-O)-methyltransferase / Large ribosomal subunit protein uL13A / Ribosome assembly factor MRT4 / rRNA-processing protein EBP2 / Large ribosomal subunit protein eL14A / Large ribosomal subunit protein eL32 / UPF0642 protein YBL028C / Proteasome-interacting protein CIC1 / Nucleolar complex protein 2 / Nucleolar protein 16 / Nuclear GTP-binding protein NUG1 / Ribosome biogenesis protein NSA2 / Ribosome biogenesis protein RLP7 / 25S rRNA (cytosine(2870)-C(5))-methyltransferase / 60S ribosomal subunit assembly/export protein LOC1 / Large ribosomal subunit protein eL37A / Large ribosomal subunit protein eL38 / Pescadillo homolog / Ribosome biogenesis protein 15 / Large ribosomal subunit protein eL34A / Large ribosomal subunit protein eL6A / Nucleolar GTP-binding protein 1 / ATP-dependent RNA helicase HAS1 / Ribosome biogenesis protein ERB1 / Nucleolar complex-associated protein 3 / Ribosome biogenesis protein RLP24 / Ribosome biogenesis protein BRX1 / 60S ribosome subunit biogenesis protein NIP7 / ATP-dependent RNA helicase DBP10 / Eukaryotic translation initiation factor 6 / Large ribosomal subunit protein eL13A 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
1R01GM135617-01
米国
Robert A. Welch Foundation
I-1897
米国
Cancer Prevention and Research Institute of Texas (CPRIT)
RR150074
米国
引用
ジャーナル: Nat Commun / 年: 2024 タイトル: The DEAD-box ATPase Dbp10/DDX54 initiates peptidyl transferase center formation during 60S ribosome biogenesis. 著者: Victor E Cruz / Christine S Weirich / Nagesh Peddada / Jan P Erzberger / 要旨: DEAD-box ATPases play crucial roles in guiding rRNA restructuring events during the biogenesis of large (60S) ribosomal subunits, but their precise molecular functions are currently unknown. In this ...DEAD-box ATPases play crucial roles in guiding rRNA restructuring events during the biogenesis of large (60S) ribosomal subunits, but their precise molecular functions are currently unknown. In this study, we present cryo-EM reconstructions of nucleolar pre-60S intermediates that reveal an unexpected, alternate secondary structure within the nascent peptidyl-transferase-center (PTC). Our analysis of three sequential nucleolar pre-60S intermediates reveals that the DEAD-box ATPase Dbp10/DDX54 remodels this alternate base pairing and enables the formation of the rRNA junction that anchors the mature form of the universally conserved PTC A-loop. Post-catalysis, Dbp10 captures rRNA helix H61, initiating the concerted exchange of biogenesis factors during late nucleolar 60S maturation. Our findings show that Dbp10 activity is essential for the formation of the ribosome active site and reveal how this function is integrated with subsequent assembly steps to drive the biogenesis of the large ribosomal subunit.