|Citation||Shinomiya, T., Ina, S. (1993). DNA replication of histone gene repeats in Drosophila melanogaster tissue culture cells: multiple initiation sites and replication pause sites. Mol. Cell. Biol. 13(7): 4098--4106. (Export to RIS)|
|Publication Type||Research paper|
|PubMed Abstract||We showed previously that DNA replication initiates at multiple sites in the 5-kb histone gene repeating unit in early embryos of Drosophila melanogaster. The present report shows evidence that replication in the same chromosomal region initiates at multiple sites in tissue culture cells as well. First, we analyzed replication intermediates by the two-dimensional gel electrophoretic replicon mapping method and detected bubble-form replication intermediates for all fragments restricted at different sites in the repeating unit. Second, we analyzed bromodeoxyuridine-labeled nascent strands amplified by the polymerase chain reaction method and detected little differences in the size distribution of nascent strands specific to six short segments located at different sites in the repeating unit. These results strongly suggest that DNA replication initiates at multiple sites located within the repeating unit. We also found several replication pause sites located at 5' upstream regions of some histone genes.|
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|Language of Publication||English|
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|Also Published As|
|Abbreviation||Mol. Cell. Biol.|
|Title||Molecular and Cellular Biology|
|Data from Reference|