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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1992-4-15
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pubmed:abstractText |
We have analyzed the assembly of the spliceosomal U4/U6 snRNP by injecting synthetic wild-type and mutant U4 RNAs into the cytoplasm of Xenopus oocytes and determining the cytoplasmic-nuclear distribution of U4 and U4/U6 snRNPs by CsCl density gradient centrifugation. Whereas the U4 snRNP was localized in both the cytoplasmic and nuclear fractions, the U4/U6 snRNP was detected exclusively in the nuclear fraction. Cytoplasmic-nuclear migration of the U4 snRNP did not depend on the stem II nor on the 5' stem-loop region of U4 RNA. Our data provide strong evidence that, following the cytoplasmic assembly of the U4 snRNP, the interaction of the U4 snRNP with U6 RNA/RNP occurs in the nucleus; furthermore, cytoplasmic-nuclear transport of the U4 snRNP is independent of U4/U6 snRNP assembly.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0014-4827
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
199
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
373-7
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1371962-Animals,
pubmed-meshheading:1371962-Base Sequence,
pubmed-meshheading:1371962-Biological Transport,
pubmed-meshheading:1371962-Cell Nucleus,
pubmed-meshheading:1371962-Cytoplasm,
pubmed-meshheading:1371962-Humans,
pubmed-meshheading:1371962-Microinjections,
pubmed-meshheading:1371962-Molecular Sequence Data,
pubmed-meshheading:1371962-Nucleic Acid Conformation,
pubmed-meshheading:1371962-RNA,
pubmed-meshheading:1371962-Ribonucleoproteins,
pubmed-meshheading:1371962-Ribonucleoproteins, Small Nuclear,
pubmed-meshheading:1371962-Transcription, Genetic,
pubmed-meshheading:1371962-Xenopus laevis
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pubmed:year |
1992
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pubmed:articleTitle |
Assembly and nuclear transport of the U4 and U4/U6 snRNPs.
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pubmed:affiliation |
Max-Planck-Institut für Molekulare Genetik, Otto-Warburg-Laboratorium, Berlin Dahlem, Germany.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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