PTEN blocking peptide

PTEN Blocking Peptide (C-term)

• Gene Names: PTEN; BZS; DEC; CWS1; GLM2; MHAM; TEP1; MMAC1; PTEN1; 10q23del
• Synonyms: PTEN; PTEN Blocking Peptide (C-term); Phosphatidylinositol 3; 5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN; Mutated in multiple advanced cancers 1; Phosphatase and tensin homolog; MMAC1; TEP1; PTEN blocking peptide

• Specificity: The synthetic peptide sequence used to generate the antibody was selected from the C-term region of human PTEN. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.
• Form/Format: The synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder.
• Sequence Length: 403

• Reconstitution: Reconstitute with 0.1 ml deionized water for a final concentration of 1 mg/ml.
• Cellular Location: Cytoplasm. Nucleus. Nucleus, PML body. Note=Monoubiquitinated form is nuclear. Nonubiquitinated form is cytoplasmic. Colocalized with PML and USP7 in PML nuclear bodies XIAP/BIRC4 promotes its nuclear localization
• Peptide ID: 3110602
• Tissue Location: Expressed at a relatively high level in all adult tissues, including heart, brain, placenta, lung, liver, muscle, kidney and pancreas.
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C.

Related Product Information for PTEN blocking peptide

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 adult 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.

NCBI and Uniprot Product Information

• NCBI GI #: 73765544
• NCBI GeneID: 5728
• NCBI Accession #: NP_000305.3
• NCBI GenBank Nucleotide #: NM_000314.6
• UniProt Accession #: P60484; O00633; O02679; Q6ICT7; B2R904; F2YHV0
• Molecular Weight: 19,796 Da
• NCBI Official Full Name: phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN isoform PTEN
• NCBI Official Synonym Full Names: phosphatase and tensin homolog
• NCBI Official Symbol: PTEN
• NCBI Official Synonym Symbols: BZS; DEC; CWS1; GLM2; MHAM; TEP1; MMAC1; PTEN1; 10q23del
• NCBI Protein Information: phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN
• UniProt Protein Name: Phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase PTEN
• Protein Family: Phosphatidylinositol 3,4,5-trisphosphate 3-phosphatase and dual-specificity protein phosphatase
• UniProt Gene Name: PTEN
• UniProt Synonym Gene Names: MMAC1; TEP1

NCBI Description

This gene was identified as a tumor suppressor that is mutated in a large number of cancers at high frequency. The protein encoded by this gene is a phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase. It contains a tensin like domain as well as a catalytic domain similar to that of the dual specificity protein tyrosine phosphatases. Unlike most of the protein tyrosine phosphatases, this protein preferentially dephosphorylates phosphoinositide substrates. It negatively regulates intracellular levels of phosphatidylinositol-3,4,5-trisphosphate in cells and functions as a tumor suppressor by negatively regulating AKT/PKB signaling pathway. The use of a non-canonical (CUG) upstream initiation site produces a longer isoform that initiates translation with a leucine, and is thought to be preferentially associated with the mitochondrial inner membrane. This longer isoform may help regulate energy metabolism in the mitochondria. A pseudogene of this gene is found on chromosome 9. Alternative splicing and the use of multiple translation start codons results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Feb 2015]

Uniprot Description

PTEN: a phosphoinositide 3-phosphatase (PIP3) and a tumor suppressor implicated in a wide variety of human cancers. Dephosphorylates inositol phospholipids generated by the activation of the phosphoinositide 3 kinase (PI3K). A major negative regulator of the PI3K/Akt signaling pathway. Possesses a C-terminal regulatory domain that contains three phosphorylation sites which may regulate its stability.

Protein type: Carbohydrate Metabolism - inositol phosphate; EC 3.1.3.16; EC 3.1.3.48; EC 3.1.3.67; Motility/polarity/chemotaxis; Nuclear receptor co-regulator; Phosphatase, lipid; Tumor suppressor

Chromosomal Location of Human Ortholog: 10q23.31

Cellular Component: apical plasma membrane; cell projection; cytoplasm; cytosol; internal side of plasma membrane; neuron projection; nucleoplasm; nucleus; plasma membrane

Molecular Function: enzyme binding; identical protein binding; inositol-1,3,4,5-tetrakisphosphate 3-phosphatase activity; PDZ domain binding; phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase activity; phosphatidylinositol-3,4-bisphosphate 3-phosphatase activity; phosphatidylinositol-3-phosphatase activity; phosphoprotein phosphatase activity; protein binding; protein serine/threonine phosphatase activity; protein tyrosine phosphatase activity

Biological Process: apoptosis; brain morphogenesis; cell migration; cell proliferation; central nervous system development; central nervous system neuron axonogenesis; dentate gyrus development; forebrain morphogenesis; G1/S-specific negative regulation of cyclin-dependent protein kinase activity; heart development; inositol phosphate dephosphorylation; inositol phosphate metabolic process; learning and/or memory; locomotor rhythm; locomotory behavior; multicellular organismal response to stress; myelin maintenance in the central nervous system; negative regulation of axonogenesis; negative regulation of cell migration; negative regulation of cell proliferation; negative regulation of cell size; negative regulation of focal adhesion formation; negative regulation of organ growth; negative regulation of phosphoinositide 3-kinase cascade; negative regulation of protein amino acid phosphorylation; negative regulation of protein kinase B signaling cascade; nerve-nerve synaptic transmission; phosphatidylinositol biosynthetic process; phosphoinositide dephosphorylation; phosphoinositide-mediated signaling; positive regulation of cell proliferation; positive regulation of transcription factor activity; prepulse inhibition; protein amino acid dephosphorylation; protein kinase B signaling cascade; protein stabilization; regulation of cellular component size; regulation of cyclin-dependent protein kinase activity; regulation of protein stability; rhythmic synaptic transmission; social behavior; synapse maturation; synaptogenesis; T cell receptor signaling pathway; Wnt receptor signaling pathway through beta-catenin

Disease: Bannayan-riley-ruvalcaba Syndrome; Cowden Syndrome 1; Endometrial Cancer; Glioma Susceptibility 2; Macrocephaly/autism Syndrome; Melanoma, Cutaneous Malignant, Susceptibility To, 1; Meningioma, Familial, Susceptibility To; Prostate Cancer; Squamous Cell Carcinoma, Head And Neck; Thyroid Carcinoma, Follicular; Vacterl Association With Hydrocephalus