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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Last, T. J. Nickerson, J. Guo, B. Lian, J. B. Penman, S. Van Wijnen, A. J. Odgren, P. R. Stein, G. S. Stein, J. L. |
| Description | Author Affiliation: Guo B ( Department of Cell Biology, University of Masachusetts Medical Center, Worcester 01655, USA.); |
| Abstract | NMP-1 was initially identified as a nuclear matrix-associated DNA-binding factor that exhibits sequence-specific recognition for the site IV regulatory element of a histone H4 gene. This distal promoter domain is a nuclear matrix interaction site. In the present study, we show that NMP-1 is the multifunctional transcription factor YY1. Gel-shift and Western blot analyses demonstrate that NMP-1 is immunoreactive with YY1 antibody. Furthermore, purified YY1 protein specifically recognizes site IV and reconstitutes the NMP-1 complex. Western blot and gel-shift analyses indicate that YY1 is present within the nuclear matrix. In situ immunofluorescence studies show that a significant fraction of YY1 is localized in the nuclear matrix, principally but not exclusively associated with residual nucleoli. Our results confirm that NMP-1/YY1 is a ubiquitous protein that is present in both human cells and in rat osteosarcoma ROS 17/2.8 cells. The finding that NMP-1 is identical to YY1 suggests that this transcriptional regulator may mediate gene-matrix interactions. Our results are consistent with the concept that the nuclear matrix may functionally compartmentalize the eukaryotic nucleus to support regulation of gene expression. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 23 |
| Volume Number | 92 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1995-12-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cell Nucleus Chemistry DNA-Binding Proteins Isolation & Purification Transcription Factors Animals Antibody Specificity Binding Sites Blotting, Western Cell Compartmentation Cell Nucleolus Ultrastructure Cross Reactions DNA Metabolism Genetics Immunology Erythroid-Specific DNA-Binding Factors HeLa Cells Molecular Sequence Data Nuclear Matrix Oligodeoxyribonucleotides Protein Binding Recombinant Proteins YY1 Transcription Factor Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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