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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Luger, Karolin Andrews, Andrew J. Downing, Gregory Brown, Kitty Park, Young-jun |
| Description | Author Affiliation: Andrews AJ ( Howard Hughes Medical Institute and Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado 80523-1870, USA.) |
| Abstract | The yeast nucleosome assembly protein 1 (yNap1) plays a role in chromatin maintenance by facilitating histone exchange as well as nucleosome assembly and disassembly. It has been suggested that yNap1 carries out these functions by regulating the concentration of free histones. Therefore, a quantitative understanding of yNap1-histone interactions also provides information on the thermodynamics of chromatin. We have developed quantitative methods to study the affinity of yNap1 for histones. We show that yNap1 binds H2A/H2B and H3/H4 histone complexes with low nm affinity, and that each yNap1 dimer binds two histone fold dimers. The yNap1 tails contribute synergistically to histone binding while the histone tails have a slightly repressive effect on binding. The $(H3/H4)_{2}$ tetramer binds DNA with higher affinity than it binds yNap1. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 47 |
| Volume Number | 283 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2008-11-21 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cell Cycle Proteins Physiology Gene Expression Regulation, Fungal Histones Chemistry Nuclear Proteins Animals Chromatin Metabolism DNA Dimerization Kinetics Models, Biological Nucleosome Assembly Protein 1 Protein Binding Protein Folding Protein Structure, Tertiary Saccharomyces Cerevisiae Saccharomyces Cerevisiae Proteins Thermodynamics Xenopus Laevis Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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