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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Persengiev, Stephan P. Dixit, Bharat L. Zhu, Xiaochun Kittler, Ellen L. W. Green, Michael R. Maston, Glenn A. |
| Description | Author Affiliation: Persengiev SP ( Howard Hughes Medical Institute and Program in Gene Function and Expression, University of Massachusetts Medical School, Worcester, MA 01605, USA.); |
| Abstract | TATA-box-binding protein (TBP) is a highly conserved RNA polymerase II general transcription factor that binds to the core promoter and initiates assembly of the preinitiation complex. Two proteins with high homology to TBP have been found: TBP-related factor 1 (TRF1), described only in Drosophila melanogaster, and TRF2, which is broadly distributed in metazoans. Here, we report the identification and characterization of an additional TBP-related factor, TRF3. TRF3 is virtually identical to TBP in the C-terminal core domain, including all residues involved in DNA binding and interaction with other general transcription factors. Like other TBP family members, the N-terminal region of TRF3 is divergent. The TRF3 gene is present and expressed in vertebrates, from fish through humans, but absent from the genomes of the urochordate Ciona intestinalis and the lower eukaryotes D. melanogaster and Caenorhabditis elegans. TRF3 is a nuclear protein that is present in all human and mouse tissues and cell lines examined. Despite the highly homologous TBP-like C-terminal core domain, gel filtration analysis indicates that the native molecular weight of TRF3 is substantially less than that of TFIID. Interestingly, after mitosis, reimport of TRF3 into the nucleus occurs subsequent to TBP and other basal transcription factors. In summary, TRF3 is a highly conserved vertebrate-specific TRF whose phylogenetic conservation, expression pattern, and other properties are distinct from those of TBP and all other TRFs. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 25 |
| Volume Number | 100 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2003-12-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | TATA Box Binding Protein-Like Proteins Metabolism Physiology Transcription Factors Amino Acid Sequence Animals Caenorhabditis Elegans Cell Line Cell Nucleus Chromatography, Gel Ciona Intestinalis Computational Biology DNA Chemistry Drosophila Melanogaster Fluorescent Antibody Technique, Indirect HeLa Cells Mice Mitosis Molecular Sequence Data Nuclear Proteins Phylogeny Protein Biosynthesis Protein Structure, Tertiary RNA Polymerase II Reverse Transcriptase Polymerase Chain Reaction Sequence Homology, Amino Acid Tissue Distribution Transcription Factor TFIID Transcription, Genetic 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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