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The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

The Tumor Suppressor PTEN Is Phosphorylated by the Protein Kinase CK2 at Its C Terminus

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Torres, Josema, Pulido, Rafael·2001·Journal of Biological Chemistry

Abstract

The tumor suppressor phosphatase PTEN regulates cell migration, growth, and survival by dephosphorylating phosphatidylinositol second messengers and signaling phosphoproteins. PTEN possesses a C-terminal noncatalytic regulatory domain that contains multiple putative phosphorylation sites, which could play an important role in the control of its biological activity. The protein kinase CK2 phosphorylated, in a constitutive manner, a cluster of Ser/Thr residues located at the PTEN C terminus. PTEN-phosphorylated defective mutants showed decreased stability in comparison with wild type PTEN and were more rapidly degraded by the proteasome. Inhibition of PTEN phosphorylation by the CK2 inhibitor 5,6-dichloro-1-beta-d-ribofuranosyl-benzimidazole also diminished the PTEN protein content. Our results support the notion that proper phosphorylation of PTEN by CK2 is important for PTEN protein stability to proteasome-mediated degradation.

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Metadata

Authors
Torres, J., & Pulido, R.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2001-01
Volume
276
Issue
2
Pages
993-998
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1988769784
Cited by
629
References
47
FWCI
8.69
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: The Tumor Suppressor PTEN Is Phosphorylated by the Protein Kinase CK2 at Its C Terminus. https://app.cochat.ai/papers/10.1074/jbc.m009134200
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Torres, J., & Pulido, R. (2001). The Tumor Suppressor PTEN Is Phosphorylated by the Protein Kinase CK2 at Its C Terminus. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m009134200

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