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Chromatin assembly factor 1 is essential and couples chromatin assembly to DNA replication in vivo

Open access
Hoek, Maarten, Stillman, Bruce·2003·Proceedings of the National Academy of Sciences

Abstract

De novo chromatin assembly maintains histone density on the daughter strands in the wake of the replication fork. The heterotrimer chromatin assembly factor 1 (CAF-1) couples DNA replication to histone deposition in vitro , but is not essential for yeast cell proliferation. Depletion of CAF-1 in human cell lines demonstrated that CAF-1 was required for efficient progression through S-phase. Cells lacking CAF-1 accumulated in early and mid S-phase and replicated DNA slowly. The checkpoint kinase Chk1, but not Chk2, was phosphorylated in response to CAF-1 depletion, consistent with a DNA replication defect. CAF-1-depleted cell extracts completely lacked DNA replication-coupled chromatin assembly activity, suggesting that CAF-1 is required for efficient S-phase progression in human cells. These results indicate that, in contrast to yeast, human CAF-1 is necessary for coupling chromatin assembly with DNA replication.

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Metadata

Authors
Hoek, M., & Stillman, B.
Venue
Proceedings of the National Academy of Sciences
Published
2003-09-30
Volume
100
Issue
21
Pages
12183-12188
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2044941418
Cited by
248
References
4
FWCI
5.04
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Chromatin assembly factor 1 is essential and couples chromatin assembly to DNA replication in vivo. https://app.cochat.ai/papers/10.1073/pnas.1635158100
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Hoek, M., & Stillman, B. (2003). Chromatin assembly factor 1 is essential and couples chromatin assembly to DNA replication in vivo. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1635158100

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