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A large nucleolar U3 ribonucleoprotein required for 18S ribosomal RNA biogenesis
Although the U3 small nucleolar RNA (snoRNA), a member of the box C/D class of snoRNAs, was identified with the spliceosomal small nuclear RNAs (snRNAs) over 30 years ago, its function and itsExpand
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Pre-18S ribosomal RNA is structurally compacted into the SSU processome prior to being cleaved from nascent transcripts in Saccharomyces cerevisiae.
Recent studies have revealed multiple dynamic complexes that are precursors to eukaryotic ribosomes. EM visualization of nascent rRNA transcripts provides in vivo temporal and structural context forExpand
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RNA polymerase I transcription and pre-rRNA processing are linked by specific SSU processome components.
Sequential events in macromolecular biosynthesis are often elegantly coordinated. The small ribosomal subunit (SSU) processome is a large ribonucleoprotein (RNP) required for processing of precursorsExpand
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The Putative NTPase Fap7 Mediates Cytoplasmic 20S Pre-rRNA Processing through a Direct Interaction with Rps14
ABSTRACT One of the proteins identified as being involved in ribosome biogenesis by high-throughput studies, a putative P-loop-type kinase termed Fap7 (YDL166c), was shown to be required for theExpand
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Ribosome Biogenesis in the Yeast Saccharomyces cerevisiae
Ribosomes are highly conserved ribonucleoprotein nanomachines that translate information in the genome to create the proteome in all cells. In yeast these complex particles contain four RNAs (>5400Expand
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The Small-Subunit Processome Is a Ribosome Assembly Intermediate
ABSTRACT The small-subunit (SSU) processome is a large ribonucleoprotein required for the biogenesis of the 18S rRNA and likely corresponds to the terminal knobs visualized by electron microscopy onExpand
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The sigma(70)-like motif: a eukaryotic RNA binding domain unique to a superfamily of proteins required for ribosome biogenesis.
Little is understood about the role of nucleolar RNA binding proteins in ribosome biogenesis, although there is a clear need for them based on the strict folding requirements of the pre-rRNA. We haveExpand
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The PINc domain protein Utp24, a putative nuclease, is required for the early cleavage steps in 18S rRNA maturation.
Ribosome biogenesis is a complex process that requires >150 transacting factors, many of which form macromolecular assemblies as big and complex as the ribosome itself. One of those complexes, theExpand
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The initial U3 snoRNA:pre-rRNA base pairing interaction required for pre-18S rRNA folding revealed by in vivo chemical probing
The synthesis of ribosomal subunits in the nucleolus is a conserved, essential process that results in cytoplasmic ribosomes with precisely processed and folded rRNAs assembled with ribosomalExpand
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Ribosome biogenesis: of knobs and RNA processing.
The synthesis of ribosomes in eukaryotes involves processing of pre-ribosomal RNA (pre-rRNA) and sequential assembly of a large number of ribosomal proteins on the rRNAs. Although we have gainedExpand
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