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| | ==Crystal structure of HePTP in complex with a dually phosphorylated Erk2 peptide mimetic== | | ==Crystal structure of HePTP in complex with a dually phosphorylated Erk2 peptide mimetic== |
| - | <StructureSection load='3d44' size='340' side='right' caption='[[3d44]], [[Resolution|resolution]] 1.90Å' scene=''> | + | <StructureSection load='3d44' size='340' side='right'caption='[[3d44]], [[Resolution|resolution]] 1.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3d44]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3D44 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3D44 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3d44]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3D44 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3D44 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1zc0|1zc0]], [[2gp0|2gp0]], [[2hvl|2hvl]], [[2qdc|2qdc]], [[2qdm|2qdm]], [[2qdp|2qdp]], [[3d42|3d42]]</td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3d44 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d44 OCA], [https://pdbe.org/3d44 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3d44 RCSB], [https://www.ebi.ac.uk/pdbsum/3d44 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3d44 ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PTPN7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Protein-tyrosine-phosphatase Protein-tyrosine-phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.48 3.1.3.48] </span></td></tr> | + | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3d44 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d44 OCA], [http://pdbe.org/3d44 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3d44 RCSB], [http://www.ebi.ac.uk/pdbsum/3d44 PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PTN7_HUMAN PTN7_HUMAN]] Protein phosphatase that acts preferentially on tyrosine-phosphorylated MAPK1. Plays a role in the regulation of T and B-lymphocyte development and signal transduction.<ref>PMID:1510684</ref> <ref>PMID:1530918</ref> <ref>PMID:9624114</ref> <ref>PMID:10206983</ref> <ref>PMID:10559944</ref> <ref>PMID:10702794</ref> [[http://www.uniprot.org/uniprot/MK01_HUMAN MK01_HUMAN]] Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway. MAPK1/ERK2 and MAPK3/ERK1 are the 2 MAPKs which play an important role in the MAPK/ERK cascade. They participate also in a signaling cascade initiated by activated KIT and KITLG/SCF. Depending on the cellular context, the MAPK/ERK cascade mediates diverse biological functions such as cell growth, adhesion, survival and differentiation through the regulation of transcription, translation, cytoskeletal rearrangements. The MAPK/ERK cascade plays also a role in initiation and regulation of meiosis, mitosis, and postmitotic functions in differentiated cells by phosphorylating a number of transcription factors. About 160 substrates have already been discovered for ERKs. Many of these substrates are localized in the nucleus, and seem to participate in the regulation of transcription upon stimulation. However, other substrates are found in the cytosol as well as in other cellular organelles, and those are responsible for processes such as translation, mitosis and apoptosis. Moreover, the MAPK/ERK cascade is also involved in the regulation of the endosomal dynamics, including lysosome processing and endosome cycling through the perinuclear recycling compartment (PNRC); as well as in the fragmentation of the Golgi apparatus during mitosis. The substrates include transcription factors (such as ATF2, BCL6, ELK1, ERF, FOS, HSF4 or SPZ1), cytoskeletal elements (such as CANX, CTTN, GJA1, MAP2, MAPT, PXN, SORBS3 or STMN1), regulators of apoptosis (such as BAD, BTG2, CASP9, DAPK1, IER3, MCL1 or PPARG), regulators of translation (such as EIF4EBP1) and a variety of other signaling-related molecules (like ARHGEF2, DCC, FRS2 or GRB10). Protein kinases (such as RAF1, RPS6KA1/RSK1, RPS6KA3/RSK2, RPS6KA2/RSK3, RPS6KA6/RSK4, SYK, MKNK1/MNK1, MKNK2/MNK2, RPS6KA5/MSK1, RPS6KA4/MSK2, MAPKAPK3 or MAPKAPK5) and phosphatases (such as DUSP1, DUSP4, DUSP6 or DUSP16) are other substrates which enable the propagation the MAPK/ERK signal to additional cytosolic and nuclear targets, thereby extending the specificity of the cascade. May play a role in the spindle assembly checkpoint.<ref>PMID:7588608</ref> <ref>PMID:8622688</ref> <ref>PMID:9480836</ref> <ref>PMID:9687510</ref> <ref>PMID:9649500</ref> <ref>PMID:9596579</ref> <ref>PMID:10637505</ref> <ref>PMID:10617468</ref> <ref>PMID:11154262</ref> <ref>PMID:12110590</ref> <ref>PMID:12356731</ref> <ref>PMID:12974390</ref> <ref>PMID:12794087</ref> <ref>PMID:12792650</ref> <ref>PMID:15184391</ref> <ref>PMID:15241487</ref> <ref>PMID:15952796</ref> <ref>PMID:15616583</ref> <ref>PMID:15788397</ref> <ref>PMID:15664191</ref> <ref>PMID:16581800</ref> <ref>PMID:19879846</ref> <ref>PMID:19265199</ref> Acts as a transcriptional repressor. Binds to a [GC]AAA[GC] consensus sequence. Repress the expression of interferon gamma-induced genes. Seems to bind to the promoter of CCL5, DMP1, IFIH1, IFITM1, IRF7, IRF9, LAMP3, OAS1, OAS2, OAS3 and STAT1. Transcriptional activity is independent of kinase activity.<ref>PMID:7588608</ref> <ref>PMID:8622688</ref> <ref>PMID:9480836</ref> <ref>PMID:9687510</ref> <ref>PMID:9649500</ref> <ref>PMID:9596579</ref> <ref>PMID:10637505</ref> <ref>PMID:10617468</ref> <ref>PMID:11154262</ref> <ref>PMID:12110590</ref> <ref>PMID:12356731</ref> <ref>PMID:12974390</ref> <ref>PMID:12794087</ref> <ref>PMID:12792650</ref> <ref>PMID:15184391</ref> <ref>PMID:15241487</ref> <ref>PMID:15952796</ref> <ref>PMID:15616583</ref> <ref>PMID:15788397</ref> <ref>PMID:15664191</ref> <ref>PMID:16581800</ref> <ref>PMID:19879846</ref> <ref>PMID:19265199</ref> | + | [https://www.uniprot.org/uniprot/PTN7_HUMAN PTN7_HUMAN] Protein phosphatase that acts preferentially on tyrosine-phosphorylated MAPK1. Plays a role in the regulation of T and B-lymphocyte development and signal transduction.<ref>PMID:1510684</ref> <ref>PMID:1530918</ref> <ref>PMID:9624114</ref> <ref>PMID:10206983</ref> <ref>PMID:10559944</ref> <ref>PMID:10702794</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d4/3d44_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d4/3d44_consurf.spt"</scriptWhenChecked> |
| - | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
| | </jmolCheckbox> | | </jmolCheckbox> |
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| | ==See Also== | | ==See Also== |
| - | *[[Tyrosine phosphatase|Tyrosine phosphatase]] | + | *[[Tyrosine phosphatase 3D structures|Tyrosine phosphatase 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Protein-tyrosine-phosphatase]] | + | [[Category: Large Structures]] |
| - | [[Category: Critton, D A]] | + | [[Category: Critton DA]] |
| - | [[Category: Page, R]] | + | [[Category: Page R]] |
| - | [[Category: Tortajada, A]] | + | [[Category: Tortajada A]] |
| - | [[Category: Erk2]]
| + | |
| - | [[Category: Heptp]]
| + | |
| - | [[Category: Human hematopoietic tyrosine phosphatase catalytic domain mutant]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Lc-ptp]]
| + | |
| - | [[Category: Mapk-derived peptide]]
| + | |
| - | [[Category: Phosphoprotein]]
| + | |
| - | [[Category: Protein phosphatase]]
| + | |
| - | [[Category: Ptp-peptide complex]]
| + | |
| - | [[Category: Ptpn7]]
| + | |
| Structural highlights
Function
PTN7_HUMAN Protein phosphatase that acts preferentially on tyrosine-phosphorylated MAPK1. Plays a role in the regulation of T and B-lymphocyte development and signal transduction.[1] [2] [3] [4] [5] [6]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Hematopoietic tyrosine phosphatase (HePTP) is one of three members of the kinase interaction motif (KIM) phosphatase family which also includes STEP and PCPTP1. The KIM-PTPs are characterized by a 15 residue sequence, the KIM, which confers specific high-affinity binding to their only known substrates, the MAP kinases Erk and p38, an interaction which is critical for their ability to regulate processes such as T cell differentiation (HePTP) and neuronal signaling (STEP). The KIM-PTPs are also characterized by a unique set of residues in their PTP substrate binding loops, where 4 of the 13 residues are differentially conserved among the KIM-PTPs as compared to more than 30 other class I PTPs. One of these residues, T106 in HePTP, is either an aspartate or asparagine in nearly every other PTP. Using multiple techniques, we investigate the role of these KIM-PTP specific residues in order to elucidate the molecular basis of substrate recognition by HePTP. First, we used NMR spectroscopy to show that Erk2-derived peptides interact specifically with HePTP at the active site. Next, to reveal the molecular details of this interaction, we solved the high-resolution three-dimensional structures of two distinct HePTP-Erk2 peptide complexes. Strikingly, we were only able to obtain crystals of these transient complexes using a KIM-PTP specific substrate-trapping mutant, in which the KIM-PTP specific residue T106 was mutated to an aspartic acid (T106D). The introduced aspartate side chain facilitates the coordination of the bound peptides, thereby stabilizing the active dephosphorylation complex. These structures establish the essential role of HePTP T106 in restricting HePTP specificity to only those substrates which are able to interact with KIM-PTPs via the KIM (e.g., Erk2, p38). Finally, we describe how this interaction of the KIM is sufficient for overcoming the otherwise weak interaction at the active site of KIM-PTPs.
Structural basis of substrate recognition by hematopoietic tyrosine phosphatase.,Critton DA, Tortajada A, Stetson G, Peti W, Page R Biochemistry. 2008 Dec 16;47(50):13336-45. PMID:19053285[7]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Adachi M, Sekiya M, Isobe M, Kumura Y, Ogita Z, Hinoda Y, Imai K, Yachi A. Molecular cloning and chromosomal mapping of a human protein-tyrosine phosphatase LC-PTP. Biochem Biophys Res Commun. 1992 Aug 14;186(3):1607-15. PMID:1510684
- ↑ Zanke B, Suzuki H, Kishihara K, Mizzen L, Minden M, Pawson A, Mak TW. Cloning and expression of an inducible lymphoid-specific, protein tyrosine phosphatase (HePTPase). Eur J Immunol. 1992 Jan;22(1):235-9. PMID:1530918 doi:http://dx.doi.org/10.1002/eji.1830220134
- ↑ Saxena M, Williams S, Gilman J, Mustelin T. Negative regulation of T cell antigen receptor signal transduction by hematopoietic tyrosine phosphatase (HePTP). J Biol Chem. 1998 Jun 19;273(25):15340-4. PMID:9624114
- ↑ Saxena M, Williams S, Brockdorff J, Gilman J, Mustelin T. Inhibition of T cell signaling by mitogen-activated protein kinase-targeted hematopoietic tyrosine phosphatase (HePTP). J Biol Chem. 1999 Apr 23;274(17):11693-700. PMID:10206983
- ↑ Saxena M, Williams S, Tasken K, Mustelin T. Crosstalk between cAMP-dependent kinase and MAP kinase through a protein tyrosine phosphatase. Nat Cell Biol. 1999 Sep;1(5):305-11. PMID:10559944 doi:http://dx.doi.org/10.1038/13024
- ↑ Pettiford SM, Herbst R. The MAP-kinase ERK2 is a specific substrate of the protein tyrosine phosphatase HePTP. Oncogene. 2000 Feb 17;19(7):858-69. PMID:10702794 doi:http://dx.doi.org/10.1038/sj.onc.1203408
- ↑ Critton DA, Tortajada A, Stetson G, Peti W, Page R. Structural basis of substrate recognition by hematopoietic tyrosine phosphatase. Biochemistry. 2008 Dec 16;47(50):13336-45. PMID:19053285 doi:10.1021/bi801724n
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