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- W1990204540 endingPage "e42375" @default.
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- W1990204540 abstract "Replication timing of metazoan DNA during S-phase may be determined by many factors including chromosome structures, nuclear positioning, patterns of histone modifications, and transcriptional activity. It may be determined by Mb-domain structures, termed as replication domains, and recent findings indicate that replication timing is under developmental and cell type-specific regulation.We examined replication timing on the human 5q23/31 3.5-Mb segment in T cells and non-T cells. We used two independent methods to determine replication timing. One is quantification of nascent replicating DNA in cell cycle-fractionated stage-specific S phase populations. The other is FISH analyses of replication foci. Although the locations of early- and late-replicating domains were common between the two cell lines, the timing transition region (TTR) between early and late domains were offset by 200-kb. We show that Special AT-rich sequence Binding protein 1 (SATB1), specifically expressed in T-cells, binds to the early domain immediately adjacent to TTR and delays the replication timing of the TTR. Measurement of the chromosome copy number along the TTR during synchronized S phase suggests that the fork movement may be slowed down by SATB1.Our results reveal a novel role of SATB1 in cell type-specific regulation of replication timing along the chromosome." @default.
- W1990204540 created "2016-06-24" @default.
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- W1990204540 date "2012-08-07" @default.
- W1990204540 modified "2023-10-02" @default.
- W1990204540 title "Regulation of DNA Replication Timing on Human Chromosome by a Cell-Type Specific DNA Binding Protein SATB1" @default.
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- W1990204540 doi "https://doi.org/10.1371/journal.pone.0042375" @default.
- W1990204540 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3413666" @default.
- W1990204540 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22879953" @default.
- W1990204540 hasPublicationYear "2012" @default.
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