Mechanism of eIF6 release from the nascent 60S ribosomal subunit
نویسندگان
چکیده
منابع مشابه
Mechanism of eIF6-mediated inhibition of ribosomal subunit joining.
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 Saccharomyc...
متن کاملRegulated Release of L13a from the 60S Ribosomal Subunit as A Mechanism of Transcript-Specific Translational Control
Transcript-specific translational control is generally directed by binding of trans-acting proteins to structural elements in the untranslated region (UTR) of the target mRNA. Here, we elucidate a translational silencing mechanism involving regulated release of an integral ribosomal protein and subsequent binding to its target mRNA. Human ribosomal protein L13a was identified as a candidate int...
متن کاملThe β4 Integrin Interactor p27BBP/eIF6 Is an Essential Nuclear Matrix Protein Involved in 60S Ribosomal Subunit Assembly
p27(BBP/eIF6) is an evolutionarily conserved protein that was originally identified as p27(BBP), an interactor of the cytoplasmic domain of integrin beta4 and, independently, as the putative translation initiation factor eIF6. To establish the in vivo function of p27(BBP/eIF6), its topographical distribution was investigated in mammalian cells and the effects of disrupting the corresponding gen...
متن کاملSequential protein association with nascent 60S ribosomal particles.
Ribosome biogenesis in eukaryotes depends on the coordinated action of ribosomal and nonribosomal proteins that guide the assembly of preribosomal particles. These intermediate particles follow a maturation pathway in which important changes in their protein composition occur. The mechanisms involved in the coordinated assembly of the ribosomal particles are poorly understood. We show here that...
متن کاملRelease of the export adapter, Nmd3p, from the 60S ribosomal subunit requires Rpl10p and the cytoplasmic GTPase Lsg1p.
In eukaryotes, nuclear export of the large (60S) ribosomal subunit requires the adapter protein Nmd3p to provide the nuclear export signal. Here, we show that in yeast release of Nmd3p from 60S subunits in the cytoplasm requires the ribosomal protein Rpl10p and the G-protein, Lsg1p. Mutations in LSG1 or RPL10 blocked Nmd3-GFP shuttling into the nucleus and export of pre-60S subunits from the nu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Structural & Molecular Biology
سال: 2015
ISSN: 1545-9993,1545-9985
DOI: 10.1038/nsmb.3112