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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Marck, C. Sentenac, A. Riva, M. Carles, C. Ruet, A. Lefebvre, O. Chaussivert, N. |
| Description | Author Affiliation: Marck C ( Département de Biologie Cellulaire et Moléculaire, Centre d'Etudes de Saclay, Gif-sur-Yvette, France.); |
| Abstract | The multisubunit yeast transcription factor IIIC (TFIIIC; also called tau) can undergo considerable conformational changes upon binding to the A and B blocks of tRNA genes. After binding to DNA encoding tRNA (tDNA), TFIIIC acts as an assembly factor to recruit an initiation factor, TFIIIB, via its tau 131 subunit. We have cloned the gene encoding the tau 131 subunit and named it TFC4. This gene is unique, essential for cell viability, and encodes a M(r) 120,153 protein. Epitope-tagging and mobility-shift assays indicated the presence of a single tau 131 subunit in TFIIIC-tDNA complexes. tau 131 contains two sequence motifs, accounting for nearly one-half of the protein mass, that may provide a molecular explanation for the properties of TFIIIC-tDNA complex. A series of 11 copies of the tetratricopeptide repeat motif may account for the flexibility and interaction properties of TFIIIC. A motif akin to the basic helix-loop-helix motif of MyoD suggests the direct involvement of tau 131 in promoting DNA binding of TFIIIB. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 9 |
| Volume Number | 90 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1993-06-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Saccharomyces Cerevisiae Metabolism Transcription Factors, TFIII Transcription Factors Biosynthesis Genetics Amino Acid Sequence Binding Sites Cloning, Molecular DNA, Fungal Genes, Fungal Macromolecular Substances Molecular Sequence Data Muscle Proteins Chemistry MyoD Protein Oligodeoxyribonucleotides Peptide Fragments Isolation & Purification Restriction Mapping Sequence Homology, Amino Acid Transcription Factor TFIIIB Comparative Study Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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