The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.
The tumor-suppressor activity of PTEN is regulated by its carboxyl-terminal region
Open accessAbstract
PTEN is a recently identified tumor suppressor inactivated in a variety of cancers such as glioblastoma and endometrial and prostate carcinoma. It contains an amino-terminal phosphatase domain and acts as a phosphatidylinositol 3,4,5-trisphosphate phosphatase antagonizing the activity of the phosphatidylinositol 3-OH kinase. PTEN also contains a carboxyl-terminal domain, and we addressed the role of this region that, analogous to the amino-terminal phosphatase domain, is the target of many mutations identified in tumors. Expression of carboxyl-terminal mutants in PTEN-deficient glioblastoma cells permitted the anchorage-independent growth of the cells that otherwise was suppressed by wild-type PTEN. The stability of these mutants in cells was reduced because of rapid degradation. Although the carboxyl-terminal region contains regulatory PEST sequences and a PDZ-binding motif, these specific elements were dispensable for the tumor-suppressor function. The study of carboxyl-terminal point mutations affecting the stability of PTEN revealed that these were located in strongly predicted β-strands. Surprisingly, the phosphatase activity of these mutants was affected in correlation with the degree of disruption of these structural elements. We conclude that the carboxyl-terminal region is essential for regulating PTEN stability and enzymatic activity and that mutations in this region are responsible for the reversion of the tumor-suppressor phenotype. We also propose that the molecular conformational changes induced by these mutations constitute the mechanism for PTEN inactivation.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Li, J., Yen, C., Liaw, D., Podsypanina, K., Bose, S., Wang, S. I., Puc, J., Miliaresis, C., Rodgers, L., McCombie, R., et al. (1997) · Science · doi:10.1126/science.275.5308.1943 · Cited by 4,785
The E6 oncoprotein encoded by human papillomavirus types 16 and 18 promotes the degradation of p53
Scheffner, M., Werness, B. A., Huibregtse, J. M., Levine, A. J., & Howley, P. M. (1990) · Cell · doi:10.1016/0092-8674(90)90409-8 · Cited by 3,995
Maehama, T., & Dixon, J. E. (1998) · Journal of Biological Chemistry · doi:10.1074/jbc.273.22.13375 · Cited by 3,104
Steck, P. A., Pershouse, M. A., Jasser, S. A., Yung, W. K. A., Lin, H., Ligon, A. H., Langford, L. A., Baumgard, M. L., Hattier, T., Davis, T., et al. (1997) · Nature Genetics · doi:10.1038/ng0497-356 · Cited by 2,741
Negative regulation of PKB/Akt-dependent cell survival by the tumor suppressor PTEN
Stambolic, V., Suzuki, A., de la Pompa, J. L., Brothers, G. M., Mirtsos, C., Sasaki, T., Ruland, J., Penninger, J. M., Siderovski, D. P., & Mak, T. W. (1998) · Cell · doi:10.1016/s0092-8674(00)81780-8 · Cited by 2,551
Amino Acid Sequences Common to Rapidly Degraded Proteins: The PEST Hypothesis
Rogers, S., Wells, R., & Rechsteiner, M. (1986) · Science · doi:10.1126/science.2876518 · Cited by 2,537
Liaw, D., Marsh, D. J., Li, J., Dahia, P. L. M., Wang, S. I., Zheng, Z., Bose, S., Call, K. M., Tsou, H. C., Peacoke, M., et al. (1997) · Nature Genetics · doi:10.1038/ng0597-64 · Cited by 2,091
The lipid phosphatase activity of PTEN is critical for its tumor supressor function
Myers, M. P., Pass, I., Batty, I. H., Van der Kaay, J., Stolarov, J. P., Hemmings, B. A., Wigler, M. H., Downes, C. P., & Tonks, N. K. (1998) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.95.23.13513 · Cited by 1,168
Li, D., & Sun, H. (1997) · PubMed · Cited by 866
P-TEN, the tumor suppressor from human chromosome 10q23, is a dual-specificity phosphatase
Myers, M. P., Stolarov, J. P., Eng, C., Li, J., Wang, S. I., Wigler, M. H., Parsons, R., & Tonks, N. K. (1997) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.94.17.9052 · Cited by 775
Cited by
Nagata, Y., Lan, K.-H., Zhou, X., Tan, M., Esteva, F. J., Sahin, A. A., Klos, K. S., Li, P., Monia, B. P., Nguyen, N. T., et al. (2004) · Cancer Cell · doi:10.1016/j.ccr.2004.06.022 · Cited by 1,858
“PP fications (Georgescu et al., 1999).”
Phosphoinositides: Tiny Lipids With Giant Impact on Cell Regulation
Balla, T. (2013) · Physiological Reviews · doi:10.1152/physrev.00028.2012 · Cited by 1,638
Synthesis and Function of 3-Phosphorylated Inositol Lipids
Vanhaesebroeck, B., Leevers, S. J., Ahmadi, K., Timms, J., Katso, R., Driscoll, P. C., Woscholski, R., Parker, P. J., & Waterfield, M. D. (2001) · Annual Review of Biochemistry · doi:10.1146/annurev.biochem.70.1.535 · Cited by 1,535
(2000) · PubMed · Cited by 1,445
The Multiple Roles of PTEN in Tumor Suppression
Di Cristofano, A., & Pandolfi, P. P. (2000) · Cell · doi:10.1016/s0092-8674(00)80674-1 · Cited by 1,182
Metadata
- Authors
- Georgescu, M.-M., Kirsch, K. H., Akagi, T., Shishido, T., & Hanafusa, H.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1999-08-31
- Volume
- 96
- Issue
- 18
- Pages
- 10182-10187
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1999125576
- Cited by
- 317
- References
- 37
- FWCI
- 6.74
- Type
- journal article
- Language
- en
- Open access
- green
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: The tumor-suppressor activity of PTEN is regulated by its carboxyl-terminal region. https://app.cochat.ai/papers/10.1073/pnas.96.18.10182
- The paper
- Georgescu, M.-M., Kirsch, K. H., Akagi, T., Shishido, T., & Hanafusa, H. (1999). The tumor-suppressor activity of PTEN is regulated by its carboxyl-terminal region. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.96.18.10182
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
