| Function: |
Tumor suppressor. Acts as a dual-specificity protein phosphatase, dephosphorylating tyrosine-, serine- and threonine-phosphorylated proteins. Also acts as a lipid phosphatase, removing the phosphate in the D3 position of the inositol ring from phosphatidylinositol 3,4,5-trisphosphate, phosphatidylinositol 3,4-diphosphate, phosphatidylinositol 3-phosphate and inositol 1,3,4,5-tetrakisphosphate with order of substrate preference in vitro PtdIns(3,4,5)P3 > PtdIns(3,4)P2 > PtdIns3P > Ins(1,3,4,5)P4 (PubMed:26504226). The lipid phosphatase activity is critical for its tumor suppressor function. Antagonizes the PI3K-AKT/PKB signaling pathway by dephosphorylating phosphoinositides and thereby modulating cell cycle progression and cell survival. The unphosphorylated form cooperates with AIP1 to suppress AKT1 activation. Dephosphorylates tyrosine-phosphorylated focal adhesion kinase and inhibits cell migration and integrin-mediated cell spreading and focal adhesion formation. Plays a role as a key modulator of the AKT-mTOR signaling pathway controlling the tempo of the process of newborn neurons integration during ***** neurogenesis, including correct neuron positioning, dendritic development and synapse formation. May be a negative regulator of insulin signaling and glucose metabolism in adipose tissue. The nuclear monoubiquitinated form possesses greater apoptotic potential, whereas the cytoplasmic nonubiquitinated form induces less tumor suppressive ability. In motile cells, suppresses the formation of lateral pseudopods and thereby promotes cell polarization and directed movement. |
| Tissue Specificity: |
Expressed at a relatively high level in all ***** tissues, including heart, brain, placenta, lung, liver, muscle, kidney and pancreas. |
| Involvement in Disease: |
Cowden syndrome 1: An autosomal dominant hamartomatous polyposis syndrome with age-related penetrance. Cowden syndrome is characterized by hamartomatous lesions affecting derivatives of ectodermal, mesodermal and endodermal layers, macrocephaly, facial trichilemmomas (benign tumors of the hair follicle infundibulum), acral keratoses, papillomatous papules, and elevated risk for development of several types of malignancy, particularly breast carcinoma in women and thyroid carcinoma in both men and women. Colon cancer and renal cell carcinoma have also been reported. Hamartomas can be found in virtually every organ, but most commonly in the skin, gastrointestinal tract, breast and thyroid.
Lhermitte-Duclos disease: A rare disease characterized by the occurrence of a slowly enlarging mass within the cerebellar cortex corresponding histologically to a cerebellar hamartoma. It manifests, most commonly in the third and fourth decades of life, with increased intracranial pressure, headache, nausea, cerebellar dysfunction, occlusive hydrocephalus, ataxia, visual disturbances and other cranial nerve palsies. Various associated abnormalities may be present such as megalencephaly, microgyria, hydromyelia, polydactyly, partial gigantism, macroglossia. LDD is part of the PTEN hamartoma tumor syndromes spectrum that also includes Cowden syndrome.
Bannayan-Riley-Ruvalcaba syndrome: A rare hamartomatous disorder characterized by macrocephaly and multiple hemangiomas as well as subcutaneous and visceral lipomas. It belongs to the family of hamartomatous polyposis syndromes that includes Peutz Jeghers syndrome, juvenile polyposis, and Cowden syndrome.
Squamous cell carcinoma of the head and neck: A non-melanoma skin cancer affecting the head and neck. The hallmark of cutaneous SCC is malignant transformation of normal epidermal keratinocytes.
Endometrial cancer: A malignancy of endometrium, the mucous lining of the uterus. Most endometrial cancers are adenocarcinomas, cancers that begin in cells that make and release mucus and other fluids.
Glioma 2: Gliomas are benign or malignant central nervous system neoplasms derived from glial cells. They comprise astrocytomas and glioblastoma multiforme that are derived from astrocytes, oligodendrogliomas derived from oligodendrocytes and ependymomas derived from ependymocytes.
VACTERL association with hydrocephalus: VACTERL is an acronym for vertebral anomalies, anal atresia, congenital cardiac disease, tracheoesophageal fistula, renal anomalies, radial dysplasia, and other limb defects.
Prostate cancer: A malignancy originating in tissues of the prostate. Most prostate cancers are adenocarcinomas that develop in the acini of the prostatic ducts. Other rare histopathologic types of prostate cancer that occur in approximately 5% of patients include small cell carcinoma, mucinous carcinoma, prostatic ductal carcinoma, transitional cell carcinoma, squamous cell carcinoma, basal cell carcinoma, adenoid cystic carcinoma (basaloid), signet-ring cell carcinoma and neuroendocrine carcinoma.
Macrocephaly/autism syndrome: Patients have autism spectrum disorders and macrocephaly, with head circumferences ranging from +2.5 to +8 SD for age and sex (average head circumference +4.0 SD). |
| Post-Translational Modification: |
Constitutively phosphorylated by CK2 under normal conditions. Phosphorylated in vitro by MAST1, MAST2, MAST3 and STK11. Phosphorylation results in an inhibited activity towards PIP3. Phosphorylation can both inhibit or promote PDZ-binding. Phosphorylation at Tyr-336 by FRK/PTK5 protects this protein from ubiquitin-mediated degradation probably by inhibiting its binding to NEDD4. Phosphorylation by ROCK1 is essential for its stability and activity. Phosphorylation by PLK3 promotes its stability and prevents its degradation by the proteasome. |
| Cellular Location: |
Cytoplasm. Nucleus. Nucleus > PML body.
Monoubiquitinated form is nuclear. Nonubiquitinated form is cytoplasmic. Colocalized with PML and USP7 in PML nuclear bodies (PubMed:18716620). XIAP/BIRC4 promotes its nuclear localization (PubMed:19473982). |
| Database Links: |
Entrez Gene: 5728?HumanEntrez Gene: 19211?MouseEntrez Gene: 50557?RatOmim: 601728?HumanSwissProt: P60484?HumanSwissProt: O08586?MouseUnigene: 500466?HumanUnigene: 729457?HumanUnigene: 245395?MouseUnigene: 22158?Rat |
| Synonyms: |
10q23del AntibodyBZS AntibodyDEC AntibodyGLM2 AntibodyMGC11227 AntibodyMHAM AntibodyMMAC1 AntibodyMMAC1 phosphatase and tensin homolog deleted on chromosome 10 AntibodyMutated in multiple advanced cancers 1 AntibodyPhosphatase and tensin homolog AntibodyPhosphatase and tensin like protein AntibodyPhosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN AntibodyPTEN AntibodyPTEN1 AntibodyPTEN_HUMAN AntibodyTEP1 Antibody |
| Information: |
Target information shown above is from the UniProt Consortium. |
