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Human DNA-(Cytosine-5) Methyltransferase-PCNA Complex as a Target for p21 WAF1

Chuang, Linda S.-H., Ian, Hang-In, Koh, Tong-Wey, Ng, Huck-Hui, Xu, Guoliang, Li, Benjamin F. L.·1997·Science

Abstract

DNA–(cytosine-5) methyltransferase (MCMT) methylates newly replicated mammalian DNA, but the factors regulating this activity are unknown. Here, MCMT is shown to bind proliferating cell nuclear antigen (PCNA), an auxiliary factor for DNA replication and repair. Binding of PCNA requires amino acids 163 to 174 of MCMT, occurs in intact cells at foci of newly replicated DNA, and does not alter MCMT activity. A peptide derived from the cell cycle regulator p21 WAF1 can disrupt the MCMT-PCNA interaction, which suggests that p21 WAF1 may regulate methylation by blocking access of MCMT to PCNA. MCMT and p21 WAF1 may be linked in a regulatory pathway, because the extents of their expression are inversely related in both SV40-transformed and nontransformed cells.

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Crossref · 10.1126/science.277.5334.1996

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Metadata

Authors
Chuang, L. S.-H., Ian, H.-I., Koh, T.-W., Ng, H.-H., Xu, G., & Li, B. F. L.
Venue
Science
Published
1997-09-26
Volume
277
Issue
5334
Pages
1996-2000
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2055171335
Cited by
902
References
2
FWCI
14.17
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Human DNA-(Cytosine-5) Methyltransferase-PCNA Complex as a Target for p21 WAF1. https://app.cochat.ai/papers/10.1126/science.277.5334.1996
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Chuang, L. S.-H., Ian, H.-I., Koh, T.-W., Ng, H.-H., Xu, G., & Li, B. F. L. (1997). Human DNA-(Cytosine-5) Methyltransferase-PCNA Complex as a Target for p21 WAF1. Science. https://doi.org/10.1126/science.277.5334.1996

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