Receptor-type tyrosine-protein phosphatase F is an enzyme that, in humans, is encoded by the PTPRF gene.[5][6]
Quick Facts Available structures, PDB ...
Close
The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes, including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP possesses an extracellular region, a single transmembrane region, and two tandem intracytoplasmic catalytic domains, and thus represents a receptor-type PTP. The extracellular region contains three Ig-like domains, and nine non-Ig-like domains similar to those of the neural cell adhesion molecule. This PTP was shown to function in the regulation of epithelial cell-cell contacts at adherens junctions, as well as in the control of beta-catenin signaling. An increased expression level of this protein was found in the insulin-responsive tissue of obese, insulin-resistant individuals and may contribute to the pathogenesis of insulin resistance. Two alternatively spliced transcript variants of this gene, which encode distinct proteins, have been reported.[6]
Harder KW, Saw J, Miki N, Jirik F (Nov 1995). "Coexisting amplifications of the chromosome 1p32 genes (PTPRF and MYCL1) encoding protein tyrosine phosphatase LAR and L-myc in a small cell lung cancer line". Genomics. 27 (3): 552–3. doi:10.1006/geno.1995.1092. PMID 7558042. Bonvini P, An WG, Rosolen A, Nguyen P, Trepel J, Garcia de Herreros A, Dunach M, Neckers LM (Feb 2001). "Geldanamycin abrogates ErbB2 association with proteasome-resistant beta-catenin in melanoma cells, increases beta-catenin-E-cadherin association, and decreases beta-catenin-sensitive transcription". Cancer Res. 61 (4): 1671–7. PMID 11245482.
- Chernoff J (1999). "Protein tyrosine phosphatases as negative regulators of mitogenic signaling". J. Cell. Physiol. 180 (2): 173–81. doi:10.1002/(SICI)1097-4652(199908)180:2<173::AID-JCP5>3.0.CO;2-Y. PMID 10395287. S2CID 24952421.
- Hashimoto N, Feener EP, Zhang WR, Goldstein BJ (1992). "Insulin receptor protein-tyrosine phosphatases. Leukocyte common antigen-related phosphatase rapidly deactivates the insulin receptor kinase by preferential dephosphorylation of the receptor regulatory domain". J. Biol. Chem. 267 (20): 13811–4. doi:10.1016/S0021-9258(19)49639-7. PMID 1321126.
- Jirik FR, Harder KW, Melhado IG, Anderson LL, Duncan AM (1993). "The gene for leukocyte antigen-related tyrosine phosphatase (LAR) is localized to human chromosome 1p32, a region frequently deleted in tumors of neuroectodermal origin". Cytogenet. Cell Genet. 61 (4): 266–8. doi:10.1159/000133418. PMID 1486801.
- Streuli M, Krueger NX, Thai T, Tang M, Saito H (1990). "Distinct functional roles of the two intracellular phosphatase like domains of the receptor-linked protein tyrosine phosphatases LCA and LAR". EMBO J. 9 (8): 2399–407. doi:10.1002/j.1460-2075.1990.tb07415.x. PMC 552264. PMID 1695146.
- Streuli M, Krueger NX, Tsai AY, Saito H (1989). "A family of receptor-linked protein tyrosine phosphatases in humans and Drosophila". Proc. Natl. Acad. Sci. U.S.A. 86 (22): 8698–702. Bibcode:1989PNAS...86.8698S. doi:10.1073/pnas.86.22.8698. PMC 298355. PMID 2554325.
- Streuli M, Krueger NX, Hall LR, Schlossman SF, Saito H (1988). "A new member of the immunoglobulin superfamily that has a cytoplasmic region homologous to the leukocyte common antigen". J. Exp. Med. 168 (5): 1523–30. doi:10.1084/jem.168.5.1523. PMC 2189122. PMID 2972792.
- Schaapveld RQ, van den Maagdenberg AM, Schepens JT, Weghuis DO, Geurts van Kessel A, Wieringa B, Hendriks WJ (1995). "The mouse gene Ptprf encoding the leukocyte common antigen-related molecule LAR: cloning, characterization, and chromosomal localization". Genomics. 27 (1): 124–30. doi:10.1006/geno.1995.1014. hdl:2066/21329. PMID 7665159.
- Serra-Pagès C, Kedersha NL, Fazikas L, Medley Q, Debant A, Streuli M (1995). "The LAR transmembrane protein tyrosine phosphatase and a coiled-coil LAR-interacting protein co-localize at focal adhesions". EMBO J. 14 (12): 2827–38. doi:10.1002/j.1460-2075.1995.tb07282.x. PMC 398401. PMID 7796809.
- O'Grady P, Krueger NX, Streuli M, Saito H (1994). "Genomic organization of the human LAR protein tyrosine phosphatase gene and alternative splicing in the extracellular fibronectin type-III domains". J. Biol. Chem. 269 (40): 25193–9. doi:10.1016/S0021-9258(17)31516-8. PMID 7929208.
- Pulido R, Serra-Pagès C, Tang M, Streuli M (1996). "The LAR/PTP delta/PTP sigma subfamily of transmembrane protein-tyrosine-phosphatases: multiple human LAR, PTP delta, and PTP sigma isoforms are expressed in a tissue-specific manner and associate with the LAR-interacting protein LIP.1". Proc. Natl. Acad. Sci. U.S.A. 92 (25): 11686–90. Bibcode:1995PNAS...9211686P. doi:10.1073/pnas.92.25.11686. PMC 40467. PMID 8524829.
- Liu X, Vega QC, Decker RA, Pandey A, Worby CA, Dixon JE (1996). "Oncogenic RET receptors display different autophosphorylation sites and substrate binding specificities". J. Biol. Chem. 271 (10): 5309–12. doi:10.1074/jbc.271.10.5309. PMID 8621380.
- Debant A, Serra-Pagès C, Seipel K, O'Brien S, Tang M, Park SH, Streuli M (1996). "The multidomain protein Trio binds the LAR transmembrane tyrosine phosphatase, contains a protein kinase domain, and has separate rac-specific and rho-specific guanine nucleotide exchange factor domains". Proc. Natl. Acad. Sci. U.S.A. 93 (11): 5466–71. Bibcode:1996PNAS...93.5466D. doi:10.1073/pnas.93.11.5466. PMC 39269. PMID 8643598.
- Zhang WR, Li PM, Oswald MA, Goldstein BJ (1996). "Modulation of insulin signal transduction by eutopic overexpression of the receptor-type protein-tyrosine phosphatase LAR". Mol. Endocrinol. 10 (5): 575–84. doi:10.1210/mend.10.5.8732688. PMID 8732688. S2CID 42128485.
- Tabiti K, Cui L, Chhatwal VJ, Moochhala S, Ngoi SS, Pallen CJ (1996). "Novel alternative splicing predicts a secreted extracellular isoform of the human receptor-like protein tyrosine phosphatase LAR". Gene. 175 (1–2): 7–13. doi:10.1016/0378-1119(96)00113-8. PMID 8917069.
- Ahmad F, Goldstein BJ (1997). "Functional association between the insulin receptor and the transmembrane protein-tyrosine phosphatase LAR in intact cells". J. Biol. Chem. 272 (1): 448–57. doi:10.1074/jbc.272.1.448. PMID 8995282.
- Aicher B, Lerch MM, Müller T, Schilling J, Ullrich A (1997). "Cellular Redistribution of Protein Tyrosine Phosphatases LAR and PTPσ by Inducible Proteolytic Processing". J. Cell Biol. 138 (3): 681–96. doi:10.1083/jcb.138.3.681. PMC 2141638. PMID 9245795.
- Serra-Pagès C, Medley QG, Tang M, Hart A, Streuli M (1998). "Liprins, a family of LAR transmembrane protein-tyrosine phosphatase-interacting proteins". J. Biol. Chem. 273 (25): 15611–20. doi:10.1074/jbc.273.25.15611. PMID 9624153.
- O'Grady P, Thai TC, Saito H (1998). "The Laminin–Nidogen Complex is a Ligand for a Specific Splice Isoform of the Transmembrane Protein Tyrosine Phosphatase LAR". J. Cell Biol. 141 (7): 1675–84. doi:10.1083/jcb.141.7.1675. PMC 2133008. PMID 9647658.
- Chiplunkar S, Chamblis K, Chwa M, Rosenberg S, Kenney MC, Brown DJ (1999). "Enhanced expression of a transmembrane phosphotyrosine phosphatase (LAR) in keratoconus cultures and corneas". Exp. Eye Res. 68 (3): 283–93. doi:10.1006/exer.1998.0604. PMID 10079136.
