| Chromatin remodeling by cell cycle stage-specific extracts from Physarum polycephalum. | |
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MedLine Citation:
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PMID: 10219572 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Remodeling of chromatin is an essential process allowing the establishment of specific genetic programs. The slime mold Physarum polycephalum presents the attractive advantage of natural synchrony of the cell cycle in several million nuclei. Whole-cell extracts prepared at precise stages during the cell cycle were tested for the ability to induce remodeling in erythrocyte nuclei as monitored by microscopy, protamine competition assays, micrococcal nuclease digestions, and release of histone H5. Extracts derived from two specific cell cycle stages caused opposite types of changes in erythrocyte nuclei. An increase in chromatin compaction was imparted by extracts prepared during S-phase while extracts harvested at the end of G2-phase caused increases in nuclear volume, DNA accessibility, and release of linker histone. We also found that late G2 extracts had the ability to alter the DNase I digestion profile of mononucleosomes reconstituted in vitro in a classical nucleosomes remodeling assay. The relevance of these finding to the Physarum cell cycle is discussed. |
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Authors:
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C Thiriet; J J Hayes |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: European journal of cell biology Volume: 78 ISSN: 0171-9335 ISO Abbreviation: Eur. J. Cell Biol. Publication Date: 1999 Mar |
Date Detail:
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Created Date: 1999-07-29 Completed Date: 1999-07-29 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7906240 Medline TA: Eur J Cell Biol Country: GERMANY |
Other Details:
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Languages: eng Pagination: 214-20 Citation Subset: IM |
Affiliation:
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Department of Biochemistry and Biophysics, University of Rochester Medical Center, NY/USA. Christophe-Thiriet@urmc.rochester.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Cell Cycle Cell Nucleus / physiology Chickens Chromatin / physiology* DNA / metabolism Erythrocytes / metabolism Histones / metabolism Physarum polycephalum / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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GM52426/GM/NIGMS NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Chromatin; 0/Histones; 9007-49-2/DNA |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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