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Cited by 235

The DOI matches its Crossref record; 9 of the 9 references it cites were found in a registry or an index.

Phosphorylation of p53 on Key Serines Is Dispensable for Transcriptional Activation and Apoptosis

Open access
Thompson, Thelma, Tovar, Christian, Yang, Hong, Carvajal, Daisy, Vu, Binh T., Xu, Qunli, Wahl, Geoffrey M., Heimbrook, David C., Vassilev, Lyubomir T.·2004·Journal of Biological Chemistry

Abstract

The p53 tumor suppressor is a key mediator of the cellular response to stress. Phosphorylation induced by multiple stress-activated kinases has been proposed to be essential for p53 stabilization, interaction with transcriptional co-activators, and activation of p53 target genes. However, genetic studies suggest that stress-activated phosphorylation may not be essential for p53 activation. We therefore investigated the role of p53 phosphorylation on six key serine residues (Ser(6), Ser(15), Ser(20), Ser(37), Ser(46), and Ser(392)) for p53 activation using nutlin-3, a recently developed small molecule MDM2 antagonist. We show here that nutlin does not induce the phosphorylation of p53. Comparison of the activity of unphosphorylated and phosphorylated p53 induced by the genotoxic drugs doxorubicin and etoposide in HCT116 and RKO cells revealed no difference in their sequence-specific DNA binding and ability to transactivate p53 target genes and to induce p53-dependent apoptosis. We conclude that p53 phosphorylation on six major serine sites is not required for activation of p53 target genes or biological responses in vivo.

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Metadata

Authors
Thompson, T., Tovar, C., Yang, H., Carvajal, D., Vu, B. T., Xu, Q., Wahl, G. M., Heimbrook, D. C., & Vassilev, L. T.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2004-12
Volume
279
Issue
51
Pages
53015-53022
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2022431825
Cited by
235
References
9
FWCI
8.81
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Phosphorylation of p53 on Key Serines Is Dispensable for Transcriptional Activation and Apoptosis. https://app.cochat.ai/papers/10.1074/jbc.m410233200
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Thompson, T., Tovar, C., Yang, H., Carvajal, D., Vu, B. T., Xu, Q., Wahl, G. M., Heimbrook, D. C., & Vassilev, L. T. (2004). Phosphorylation of p53 on Key Serines Is Dispensable for Transcriptional Activation and Apoptosis. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m410233200

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