Results 161 to 170 of about 37,390 (195)
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Small nucleolar RNAs

Cellular and Molecular Life Sciences, 1999
Many small RNA species associate with the nucleolar structure. Some of these small nucleolar RNAs (snoRNAs) are required for cleavage processing of ribosomal RNA precursors. There are many pseudouridine residues and methylated riboses in mature ribosomal RNA.
G L Eliceiri
exaly   +3 more sources

THE SMALL NUCLEOLAR RNAs

Annual Review of Biochemistry, 1995
The present review summarizes key progress made in characterizing the small nucleolar RNAs (snoRNAs) of eukaryotic cells. Recent studies have shown snoRNA populations to be substantially more complex than anticipated initially. Many newly discovered snoRNAs are synthesized by an intron-processing pathway, which provides a potential mechanism for ...
E S, Maxwell, M J, Fournier
openaire   +3 more sources

Function and synthesis of small nucleolar RNAs

Current Opinion in Cell Biology, 1997
Eukaryotic cells contain an extraordinarily complex population of small nucleolar RNAs (snoRNAs). During its brief lifetime, each human pre-rRNA molecule will transiently associate with approximately 150 different snoRNA species. In the past year our understanding of snoRNAs has been clarified by the recognition that the snoRNA population can be ...
David Tollervey, T Kiss
exaly   +3 more sources

The many faces of small nucleolar RNAs

Biochimica Et Biophysica Acta - Gene Regulatory Mechanisms, 2014
Small nucleolar RNAs (snoRNAs) are a class of evolutionally conserved non-coding RNAs traditionally associated with nucleotide modifications in other RNA species. Acting as guides pairing with ribosomal (rRNA) and small nuclear RNAs (snRNAs), snoRNAs direct partner enzymes to specific sites for uridine isomerization or ribose methylation, thereby ...
Tomaž Bratkovič, Boris Rogelj
exaly   +3 more sources

Small Nucleolar RNAs Tell a Different Tale [PDF]

open access: yesTrends in Genetics, 2019
Transcribing RNA Polymerase II interacts with multiple factors that orchestrate maturation and stabilisation of messenger RNA. For the majority of noncoding RNAs, the polymerase complex employs entirely different strategies, which usually direct the nascent transcript to ribonucleolytic degradation.
Joanna Kufel, Pawel Grzechnik
exaly   +4 more sources

Small nucleolar RNA

Molecular Biology, 2007
Small nucleolar RNAs (snoRNAs) are an abundant class of non-protein-coding RNAs. In association with proteins they perform two most frequent nucleotide modifications in rRNAs and some other cellular RNAs: 2'-O-ribose methylation and pseudouridylation. SnoRNAs also participate in pre-rRNA cleavage and telomerase functions.
J. A. Makarova, D. A. Kramerov
openaire   +1 more source

Biology and applications of small nucleolar RNAs

Cellular and Molecular Life Sciences, 2011
Small nucleolar RNAs (snoRNAs) constitute a group of non-coding RNAs principally involved in posttranscriptional modification of ubiquitously expressed ribosomal and small nuclear RNAs. However, a number of tissue-specific snoRNAs have recently been identified that apparently do not target conventional substrates and are presumed to guide processing of
Tomaž Bratkovič, Boris Rogelj
exaly   +3 more sources

Small nucleolar RNAs and nucleolar proteins in Xenopus anucleolate embryos

Chromosoma, 1997
We investigated the presence and localization, in the cells of anucleolate mutant embryos of Xenopus laevis, of three representative small nucleolar RNAs (snoRNAs), U3, U15 and U17, and of two nucleolar proteins, nucleolin and fibrillarin. The levels of the three snoRNAs in the anucleolate mutant are the same as in normal embryos, in contrast to 5S RNA
Crosio C   +4 more
openaire   +5 more sources

Small nucleolar RNA genes

Russian Journal of Genetics, 2007
Small nucleolar RNAs (snoRNAs) are one of the most numerous and well-studied groups of non-protein-coding RNAs. In complex with proteins, snoRNAs perform the two most common nucleotide modifications in rRNA: 2′-OH-methylation of ribose and pseudouridylation.
J. A. Makarova, D. A. Kramerov
openaire   +3 more sources

Homologs of Small Nucleolar RNAs in Archaea

Science, 2000
In eukaryotes, dozens of posttranscriptional modifications are directed to specific nucleotides in ribosomal RNAs (rRNAs) by small nucleolar RNAs (snoRNAs). We identified homologs of snoRNA genes in both branches of the Archaea. Eighteen small sno-like RNAs (sRNAs) were cloned from the archaeon Sulfolobus acidocaldarius
A D, Omer   +5 more
openaire   +2 more sources

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