منابع مشابه
Rif1 choreographs DNA replication timing.
Eukaryotic cells duplicate their genome in a predetermined order that appears to reflect a fundamental property of chromatin. Each chromosomal region replicates at a consistent, developmentaland tissue-specific time during the S phase of the cell cycle, and regions that replicate at the same time form distinct patterns in threedimensional nuclear space. Although orderly progression of DNA repli...
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Genomic DNA replicates in a choreographed temporal order that impacts the distribution of mutations along the genome. We show here that DNA replication timing is shaped by genetic polymorphisms that act in cis upon megabase-scale DNA segments. In genome sequences from proliferating cells, read depth along chromosomes reflected DNA replication activity in those cells. We used this relationship t...
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Eukaryotic genomes are replicated in a reproducible temporal order; however, the physiological significance is poorly understood. We compared replication timing in divergent yeast species and identified genomic features with conserved replication times. Histone genes were among the earliest replicating loci in all species. We specifically delayed the replication of HTA1-HTB1 and discovered that...
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In DNA replication, the antiparallel nature of the parental duplex imposes certain constraints on the activity of the DNA polymerases that synthesize new DNA. The leading-strand polymerase advances in a continuous fashion, but the lagging-strand polymerase is forced to restart at short intervals. In several prokaryotic systems studied so far, this problem is solved by the formation of a loop in...
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Light- and electron-microscope autoradiography have been used to follow the incorporation of [3H]thymidine at different stages during the interphase of synchronously growing populations of Amoeba proteus. Two main patterns were found for tritiated thymidine incorporation, i.e. DNA synthesis. The major incorporation was in the central region of the nucleus, but a lesser degree of incorporation o...
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ژورنال
عنوان ژورنال: Cold Spring Harbor Perspectives in Biology
سال: 2013
ISSN: 1943-0264
DOI: 10.1101/cshperspect.a010132