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  • 1
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    Predictive identification of exonic splicing enhancers in human genes (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-07-13
    Description: Specific short oligonucleotide sequences that enhance pre-mRNA splicing when present in exons, termed exonic splicing enhancers (ESEs), play important roles in constitutive and alternative splicing. A computational method, RESCUE-ESE, was developed that predicts which sequences have ESE activity by statistical analysis of exon-intron and splice site composition. When large data sets of human gene sequences were used, this method identified 10 predicted ESE motifs. Representatives of all 10 motifs were found to display enhancer activity in vivo, whereas point mutants of these sequences exhibited sharply reduced activity. The motifs identified enable prediction of the splicing phenotypes of exonic mutations in human genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fairbrother, William G -- Yeh, Ru-Fang -- Sharp, Phillip A -- Burge, Christopher B -- 1 R01 HG02439-01/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2002 Aug 9;297(5583):1007-13. Epub 2002 Jul 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Center for Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12114529" target="_blank"〉PubMed〈/a〉
    Keywords: Computational Biology ; Consensus Sequence ; DNA, Complementary ; Databases, Nucleic Acid ; *Exons ; *Genes ; *Genome, Human ; Humans ; Hypoxanthine Phosphoribosyltransferase/genetics ; Introns ; Oligonucleotides/genetics ; Point Mutation ; *RNA Splicing ; *Regulatory Sequences, Nucleic Acid ; Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Complementation by SR proteins of pre-mRNA splicing reactions depleted of U1 snRNP (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-09-23
    Description: Individual small nuclear ribonucleoproteins (snRNPs) U1, U2, and U4/U6 were removed from nuclear extracts of HeLa cells by antisense affinity depletion. Addition of a highly purified preparation of SR proteins fully restored splicing activity in reactions depleted of U1 snRNP but did not reconstitute splicing in reactions depleted of the other snRNPs. Affinity selection experiments revealed that spliceosomes lacking U1 snRNA formed in the U1 snRNP-depleted reactions reconstituted with SR proteins. Thus, high concentrations of SR proteins facilitate the assembly of precursor messenger RNA (pre-mRNA) into a spliceosome in the absence of interactions with U1 snRNP.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Crispino, J D -- Blencowe, B J -- Sharp, P A -- P30 CA14051/CA/NCI NIH HHS/ -- R01-AI32486/AI/NIAID NIH HHS/ -- R01-GM34277/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1994 Sep 23;265(5180):1866-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cancer Research, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8091213" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Globins/genetics ; Molecular Sequence Data ; RNA Precursors/*genetics ; *RNA Splicing ; RNA, Small Nuclear/genetics/metabolism ; RNA-Binding Proteins/*metabolism ; Ribonucleoprotein, U1 Small Nuclear/*metabolism ; Ribonucleoprotein, U2 Small Nuclear/metabolism ; Spliceosomes/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Site-specific modification of pre-mRNA: the 2'-hydroxyl groups at the splice sites (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-05-15
    Description: A simple and efficient method for synthesizing long, site-specifically modified RNA molecules was developed whereby segments of RNA were joined with the use of bacteriophage T4 DNA ligase. A single hydrogen or O-methyl group was substituted for the 2'-hydroxyl group at either splice site of a nuclear pre-messenger RNA substrate. Splicing of the modified pre-messenger RNA's in vitro revealed that, although a 2'-hydroxyl is not absolutely required at either splice site, the 2'-hydroxyl at the 3' splice site is important for the second step of splicing. These results are compared to previous studies of analogous 2'-hydroxyl groups in the self-splicing Tetrahymena group I intron.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, M J -- Sharp, P A -- P30-CA14051/CA/NCI NIH HHS/ -- R01 GM34277/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1992 May 15;256(5059):992-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cancer Research, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1589782" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; DNA Ligases/metabolism ; DNA-Directed RNA Polymerases/metabolism ; Exons ; Introns ; Kinetics ; Molecular Sequence Data ; RNA Precursors/*chemistry/metabolism ; *RNA Splicing ; RNA, Messenger/*chemistry/metabolism ; Structure-Activity Relationship ; Tetrahymena/genetics ; Viral Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Lariat RNA's as intermediates and products in the splicing of messenger RNA precursors (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-31
    Description: The splicing of messenger RNA precursors in vitro proceeds through an intermediate that has the 5' end of the intervening sequence joined to a site near the 3' splice site. This lariat structure, which has been characterized for an adenovirus 2 major late transcript, has a branch point, with 2'-5' and 3'-5' phosphodiester bonds emanating from a single adenosine residue. The excised intervening sequence retains the branch site and terminates in a guanosine residue with a 3' hydroxyl group. The phosphate group at the splice junction between the two exons originates from the 3' splice site at the precursor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Padgett, R A -- Konarska, M M -- Grabowski, P J -- Hardy, S F -- Sharp, P A -- P01-CA14051/CA/NCI NIH HHS/ -- P01-CA26717/CA/NCI NIH HHS/ -- R01-GM32467/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1984 Aug 31;225(4665):898-903.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6206566" target="_blank"〉PubMed〈/a〉
    Keywords: Adenoviruses, Human/metabolism ; Base Sequence ; Chemical Phenomena ; Chemistry ; Nucleic Acid Conformation ; Nucleic Acid Precursors/analysis/*metabolism ; Oligoribonucleotides/metabolism ; Phosphates/metabolism ; RNA/analysis/*metabolism ; RNA Precursors ; *RNA Splicing ; RNA, Messenger/analysis/*metabolism ; RNA, Viral/analysis/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Splicing of messenger RNA precursors (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-02-13
    Description: A general mechanism for the splicing of nuclear messenger RNA precursors in eukaryotic cells has been widely accepted. This mechanism, which generates lariat RNAs possessing a branch site, seems related to the RNA-catalyzed reactions of self-splicing introns. The splicing of nuclear messenger RNA precursors involves the formation of a multicomponent complex, the spliceosome. This splicing body contains at least three different small nuclear ribonucleoprotein particles (snRNPs), U2, U5, and U4 + U6. A complex containing precursor RNA and the U2 snRNP particle is a likely intermediate in the formation of the spliceosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharp, P A -- CA14051/CA/NCI NIH HHS/ -- GM34277/GM/NIGMS NIH HHS/ -- P01-CA42063/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Feb 13;235(4790):766-71.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3544217" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Introns ; Mutation ; Nucleic Acid Precursors/*genetics ; Protein Biosynthesis ; RNA Precursors ; *RNA Splicing ; RNA, Catalytic ; RNA, Messenger/*genetics ; RNA, Ribosomal/genetics ; RNA, Small Nuclear/genetics ; Saccharomyces cerevisiae/genetics ; Tetrahymena/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Affinity chromatography of splicing complexes: U2, U5, and U4 + U6 small nuclear ribonucleoprotein particles in the spliceosome (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-09-19
    Description: The splicing process, which removes intervening sequences from messenger RNA (mRNA) precursors is essential to gene expression in eukaryotic cells. This site-specific process requires precise sequence recognition at the boundaries of an intervening sequence, but the mechanism of this recognition is not understood. The splicing of mRNA precursors occurs in a multicomponent complex termed the spliceosome. Such an assembly of components is likely to play a key role in specifying those sequences to be spliced. In order to analyze spliceosome structure, a stringent approach was developed to obtain splicing complexes free of cellular contaminants. This approach is a form of affinity chromatography based on the high specificity of the biotin-streptavidin interaction. A minimum of three subunits: U2, U5, and U4 + U6 small nuclear ribonucleoprotein particles were identified in the 35S spliceosome structure, which also contains the bipartite RNA intermediate of splicing. A 25S presplicing complex contained only the U2 particle. The multiple subunit structure of the spliceosome has implications for the regulation of a splicing event and for its possible catalysis by ribozyme or ribozymes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grabowski, P J -- Sharp, P A -- CA 14051/CA/NCI NIH HHS/ -- GM32467/GM/NIGMS NIH HHS/ -- GM34277/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1986 Sep 19;233(4770):1294-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3638792" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins ; Biotin ; Cell Nucleus/metabolism ; Chromatography, Affinity ; RNA Precursors ; *RNA Splicing ; RNA, Small Nuclear/*isolation & purification ; Ribonucleoproteins/*isolation & purification ; Streptavidin ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Heterogeneous nuclear ribonucleoproteins: role in RNA splicing (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1986-03-28
    Description: Splicing in vitro of a messenger RNA (mRNA) precursor (pre-mRNA) is inhibited by a monoclonal antibody to the C proteins (anti-C) of the heterogeneous nuclear RNA (hnRNA)-ribonucleoprotein (hnRNP) particles. This antibody, 4F4, inhibits an early step of the reaction: cleavage at the 3' end of the upstream exon and the formation of the intron lariat. In contrast, boiled 4F4, or a different monoclonal antibody (designated 2B12) to the C proteins, or antibodies to other hnRNP proteins (120 and 68 kilodaltons) and nonimmune mouse antibodies have no inhibitory effect. The 4F4 antibody does not prevent the adenosine triphosphate-dependent formation of a 60S splicing complex (spliceosome). Furthermore, the 60S splicing complex contains C proteins, and it can be immunoprecipitated with 4F4. Depletion of C proteins from the splicing extract by immunoadsorption with either of the two monoclonal antibodies to the C proteins (4F4 or 2B12) results in the loss of splicing activity, whereas mock-depletion with nonimmune mouse antibodies bodies has no effect. A 60S splicing complex does not form in a C protein-depleted nuclear extract. These results indicate an essential role for proteins of the hnRNP complex in the splicing of mRNA precursors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Choi, Y D -- Grabowski, P J -- Sharp, P A -- Dreyfuss, G -- New York, N.Y. -- Science. 1986 Mar 28;231(4745):1534-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3952495" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Antibodies, Monoclonal/*immunology ; HeLa Cells ; Heterogeneous-Nuclear Ribonucleoproteins ; Humans ; In Vitro Techniques ; Macromolecular Substances ; *RNA Splicing ; RNA, Heterogeneous Nuclear/metabolism ; Ribonucleoproteins/immunology/*physiology
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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