2h4g

Structural highlights

Function

[PTN1_HUMAN] Tyrosine-protein phosphatase which acts as a regulator of endoplasmic reticulum unfolded protein response. Mediates dephosphorylation of EIF2AK3/PERK; inactivating the protein kinase activity of EIF2AK3/PERK. May play an important role in CKII- and p60c-src-induced signal transduction cascades. May regulate the EFNA5-EPHA3 signaling pathway which modulates cell reorganization and cell-cell repulsion.^{[1] [2]}

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

• Tyrosine phosphatase

References

1. ↑ Nievergall E, Janes PW, Stegmayer C, Vail ME, Haj FG, Teng SW, Neel BG, Bastiaens PI, Lackmann M. PTP1B regulates Eph receptor function and trafficking. J Cell Biol. 2010 Dec 13;191(6):1189-203. doi: 10.1083/jcb.201005035. Epub 2010, Dec 6. PMID:21135139 doi:10.1083/jcb.201005035
2. ↑ Krishnan N, Fu C, Pappin DJ, Tonks NK. H2S-Induced sulfhydration of the phosphatase PTP1B and its role in the endoplasmic reticulum stress response. Sci Signal. 2011 Dec 13;4(203):ra86. doi: 10.1126/scisignal.2002329. PMID:22169477 doi:10.1126/scisignal.2002329
3. ↑ Wan ZK, Lee J, Xu W, Erbe DV, Joseph-McCarthy D, Follows BC, Zhang YL. Monocyclic thiophenes as protein tyrosine phosphatase 1B inhibitors: capturing interactions with Asp48. Bioorg Med Chem Lett. 2006 Sep 15;16(18):4941-5. Epub 2006 Jun 27. PMID:16806920 doi:http://dx.doi.org/10.1016/j.bmcl.2006.06.051