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WWP2 is an E3 ubiquitin ligase for PTEN

Open access
Maddika, Subbareddy, Kavela, Sridhar, Rani, Neelam, Palicharla, Vivek Reddy, Pokorny, Jenny L., Sarkaria, Jann N., Chen, Junjie·2011·Nature Cell Biology

Abstract

PTEN, a lipid phosphatase, is one of the most frequently mutated tumour suppressors in human cancer. Several recent studies have highlighted the importance of ubiquitylation in regulating PTEN tumour-suppressor function, but the enzymatic machinery required for PTEN ubiquitylation is not clear. In this study, by using a tandem affinity-purification approach, we have identified WWP2 (also known as atrophin-1-interacting protein 2, AIP-2) as a PTEN-interacting protein. WWP2 is an E3 ubiquitin ligase that belongs to the NEDD4-like protein family, which is involved in regulating transcription, embryonic stem-cell fate, cellular transport and T-cell activation processes. We show that WWP2 physically interacts with PTEN and mediates its degradation through a ubiquitylation-dependent pathway. Functionally, we show that WWP2 controls cellular apoptosis and is required for tumorigenicity of cells. Collectively, our results reveal a functional E3 ubiquitin ligase for PTEN that plays a vital role in tumour-cell survival.

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Metadata

Authors
Maddika, S., Kavela, S., Rani, N., Palicharla, V. R., Pokorny, J. L., Sarkaria, J. N., & Chen, J.
Venue
Nature Cell Biology
Published
2011-05-01
Volume
13
Issue
6
Pages
728-733
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2067576594
Cited by
305
References
41
FWCI
7.88
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: WWP2 is an E3 ubiquitin ligase for PTEN. https://app.cochat.ai/papers/10.1038/ncb2240
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Maddika, S., Kavela, S., Rani, N., Palicharla, V. R., Pokorny, J. L., Sarkaria, J. N., & Chen, J. (2011). WWP2 is an E3 ubiquitin ligase for PTEN. Nature Cell Biology. https://doi.org/10.1038/ncb2240

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