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. 1981 Sep 25;9(18):4537–4546. doi: 10.1093/nar/9.18.4537

Distribution of 5-methylcytosine in the DNA of somatic and germline cells from bovine tissues.

K S Sturm, J H Taylor
PMCID: PMC327456  PMID: 6272210

Abstract

Genomic DNA of calf thymus contains 1.5 times as much 5-methylcytosine as similar sperm DNA, but the major EcoRI repeat fragment from satellite I of thymus contains ten times as much 5-methylcytosine as the corresponding fragment from sperm DNA. Restriction enzyme analyses of the total DNA and the satellite I fragment show that three HpaII sites in the fragment are completely unmethylated in sperm but fully methylated in thymus DNA. Under-methylation of many sites in the satellite DNAs can probably account for the lower level of methylation of sperm DNA rather than hemimethylation as previously suggested. These results are also discussed in relation to maintenance and de novo (initiation-type) methylases.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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