maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of 5.8S rRNA / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / ribosomal large subunit binding / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / L13a-mediated translational silencing of Ceruloplasmin expression ...maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of 5.8S rRNA / SRP-dependent cotranslational protein targeting to membrane / GTP hydrolysis and joining of the 60S ribosomal subunit / ribosomal large subunit binding / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / Formation of a pool of free 40S subunits / preribosome, large subunit precursor / L13a-mediated translational silencing of Ceruloplasmin expression / translational elongation / ribosomal subunit export from nucleus / maturation of LSU-rRNA / translation initiation factor activity / assembly of large subunit precursor of preribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ribosomal large subunit biogenesis / cytosolic ribosome assembly / translational initiation / rRNA processing / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / structural constituent of ribosome / mRNA binding / nucleolus / RNA binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
Translation initiation factor IF6 / eIF-6 family / translation initiation factor 6 / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / : / Ribosomal protein L24e-related / Ribosomal protein L24e/L24 superfamily / Ribosomal protein L24e / Ribosomal protein L14P, conserved site ...Translation initiation factor IF6 / eIF-6 family / translation initiation factor 6 / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / : / Ribosomal protein L24e-related / Ribosomal protein L24e/L24 superfamily / Ribosomal protein L24e / Ribosomal protein L14P, conserved site / Ribosomal protein L14 signature. / Ribosomal protein L14p/L23e / Ribosomal protein L14P / Ribosomal protein L14 superfamily / Ribosomal protein L14p/L23e 類似検索 - ドメイン・相同性
Large ribosomal subunit protein eL24A / 60S ribosomal protein L23-B / Large ribosomal subunit protein uL14A / Eukaryotic translation initiation factor 6 類似検索 - 構成要素
ジャーナル: J Biol Chem / 年: 2010 タイトル: Mechanism of eIF6-mediated inhibition of ribosomal subunit joining. 著者: Marco Gartmann / Michael Blau / Jean-Paul Armache / Thorsten Mielke / Maya Topf / Roland Beckmann / 要旨: During the process of ribosomal assembly, the essential eukaryotic translation initiation factor 6 (eIF6) is known to act as a ribosomal anti-association factor. However, a molecular understanding of ...During the process of ribosomal assembly, the essential eukaryotic translation initiation factor 6 (eIF6) is known to act as a ribosomal anti-association factor. However, a molecular understanding of the anti-association activity of eIF6 is still missing. Here we present the cryo-electron microscopy reconstruction of a complex of the large ribosomal subunit with eukaryotic eIF6 from Saccharomyces cerevisiae. The structure reveals that the eIF6 binding site involves mainly rpL23 (L14p in Escherichia coli). Based on our structural data, we propose that the mechanism of the anti-association activity of eIF6 is based on steric hindrance of intersubunit bridge formation around the dynamic bridge B6.