| Role of specific simian virus 40 sequences in the nuclease-sensitive structure in viral chromatin. | |
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MedLine Citation:
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PMID: 2984555 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A nuclease-sensitive region forms in chromatin containing a 273-base-pair (bp) segment of simian virus 40 DNA encompassing the viral origin of replication and early and late promoters. We have saturated this region with short deletion mutations and compared the nuclease sensitivity of each mutated segment to that of an unaltered segment elsewhere in the partially duplicated mutant. Although no single DNA segment is required for the formation of a nuclease-sensitive region, a deletion mutation (dl45) which disrupted both exact copies of the 21-bp repeats substantially reduced nuclease sensitivity. Deletion mutations limited to only one copy of the 21-bp repeats had little, if any, effect. A mutant (dl135) lacking all copies of the 21- and 72-bp repeats, while retaining the origin of replication and the TATA box, did not exhibit a nuclease-sensitive region. Mutants which showed reduced nuclease sensitivity had this effect throughout the nuclease-sensitive region, not just at the site of the deletion, indicating that although multiple determinants must be responsible for the nuclease-sensitive chromatin structure they do not function with complete independence. Mutant dl9, which lacks the late portion of the 72-bp segment, showed reduced accessibility to BglI, even though the BglI site is 146 bp away from the site of the deletion. |
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Authors:
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R D Gerard; B A Montelone; C F Walter; J W Innis; W A Scott |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Molecular and cellular biology Volume: 5 ISSN: 0270-7306 ISO Abbreviation: Mol. Cell. Biol. Publication Date: 1985 Jan |
Date Detail:
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Created Date: 1985-05-02 Completed Date: 1985-05-02 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 8109087 Medline TA: Mol Cell Biol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 52-8 Citation Subset: IM |
| Data Bank Information | |
Bank Name/Acc. No.:
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GENBANK/M12412 |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Base Sequence Chromatin / ultrastructure* DNA, Viral / genetics Endonucleases / diagnostic use Mutation Repetitive Sequences, Nucleic Acid Simian virus 40 / genetics, ultrastructure* |
| Grant Support | |
ID/Acronym/Agency:
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AI-12852/AI/NIAID NIH HHS; AM-00549/AM/NIADDK NIH HHS; GM-07332/GM/NIGMS NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Chromatin; 0/DNA, Viral; EC 3.1.-/Endonucleases |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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