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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Amrein, H. Hedley, M. L. Maniatis, T. |
| Description | Author Affiliation: Hedley ML ( Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA.); |
| Abstract | We have identified an amino acid sequence in the Drosophila Transformer (Tra) protein that is capable of directing a heterologous protein to nuclear speckles, regions of the nucleus previously shown to contain high concentrations of spliceosomal small nuclear RNAs and splicing factors. This sequence contains a nucleoplasmin-like bipartite nuclear localization signal (NLS) and a repeating arginine/serine (RS) dipeptide sequence adjacent to a short stretch of basic amino acids. Sequence comparisons from a number of other splicing factors that colocalize to nuclear speckles reveal the presence of one or more copies of this motif. We propose a two-step subnuclear localization mechanism for splicing factors. The first step is transport across the nuclear envelope via the nucleoplasmin-like NLS, while the second step is association with components in the speckled domain via the RS dipeptide sequence. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 25 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cell Compartmentation Cell Nucleus Metabolism Drosophila Proteins Nuclear Proteins RNA Splicing Amino Acid Sequence Animals Ultrastructure Cells, Cultured Cloning, Molecular Fluorescent Antibody Technique Genes, Myc HeLa Cells Molecular Sequence Data Genetics Peptides Ribonucleoproteins Serine-Arginine Splicing Factors Structure-Activity Relationship Transfection Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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