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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1985-9-19
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pubmed:abstractText |
Digestion of Physarum polycephalum nuclear DNA using the restriction endonuclease HpaII generates two components, distinguishable on the basis of their molecular size. The high-molecular-weight, HpaII-resistant component, which accounts for 20% of the DNA, contains a fivefold greater concentration of 5-methylcytosine residues than the low-molecular-weight HpaII-digested fraction. Segments of hypermethylated (M+) DNA are largely composed of a single, long, highly repeated sequence, and this major element is sometimes associated with other less highly repetitive sequences in the M+ DNA fraction. Restriction mapping of cloned Physarum M+ DNA segments, and Southern blot analysis of genomic DNA using subcloned segments of M+ DNA as a probe, provide evidence for sequence variation within different copies of the dominant highly repeated element, and possibly the other associated repeats in M+ DNA, and additionally that almost complete tandemly repeated copies of the major repeat are found in some M+ DNA segments.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
May
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pubmed:issn |
0022-1287
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
131
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
|
pubmed:pagination |
1157-65
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2991423-5-Methylcytosine,
pubmed-meshheading:2991423-Base Composition,
pubmed-meshheading:2991423-Chromatography, High Pressure Liquid,
pubmed-meshheading:2991423-Cytosine,
pubmed-meshheading:2991423-DNA, Fungal,
pubmed-meshheading:2991423-DNA Restriction Enzymes,
pubmed-meshheading:2991423-Electrophoresis, Agar Gel,
pubmed-meshheading:2991423-Methylation,
pubmed-meshheading:2991423-Nucleic Acid Hybridization,
pubmed-meshheading:2991423-Physarum,
pubmed-meshheading:2991423-Repetitive Sequences, Nucleic Acid
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pubmed:year |
1985
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pubmed:articleTitle |
Structural organization of a hypermethylated nuclear DNA component in Physarum polycephalum.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|