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Updated: Jan 5, 2026
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Assessing Cellular Target Engagement by SHP2 PTPN11 Phosphatase Inhibitors
Published on: July 17, 2020
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Structural Mechanisms of PTEN Regulation
Glenn R Masson1, Roger L Williams1
1Medical Research Council Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge CB2 0QH, United Kingdom.
Cold Spring Harbor Perspectives in Medicine
|October 23, 2019
Summary
The tumor suppressor phosphatase and tensin homolog on chromosome 10 (PTEN) enzyme
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- PTEN is a crucial tumor suppressor enzyme.
- It dephosphorylates PIP3, regulating cell growth.
- PTEN's C-terminal tail (CTT) is vital for its regulation.
Purpose of the Study:
- To review the structure of PTEN.
- To explore how PTEN structure impacts its localization.
- To examine the regulatory mechanisms of PTEN.
Main Methods:
- Literature review of PTEN structure and function.
- Analysis of PTEN isoforms and their properties.
- Exploration of PTEN's role in cellular localization.
Main Results:
- PTEN's CTT regulates enzyme activity by controlling membrane association.
- Mutations in PTEN can lead to enzyme inactivation and cancer.
- Extended PTEN isoforms, like PTEN-L, possess unique cellular functions.
- The N-terminal region of PTEN-L influences enzyme activity and localization.
Conclusions:
- PTEN structure is intrinsically linked to its regulatory mechanisms.
- Understanding PTEN structure is key to comprehending its role in cell signaling and disease.
- Alternative translation and protein isoforms contribute to PTEN's diverse functions.
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