1g1f: Difference between revisions

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==CRYSTAL STRUCTURE OF PROTEIN TYROSINE PHOSPHATASE 1B COMPLEXED WITH A TRI-PHOSPHORYLATED PEPTIDE (RDI(PTR)ETD(PTR)(PTR)RK) FROM THE INSULIN RECEPTOR KINASE==
The line below this paragraph, containing "STRUCTURE_1g1f", creates the "Structure Box" on the page.
<StructureSection load='1g1f' size='340' side='right'caption='[[1g1f]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1g1f]] 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=1G1F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1G1F FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr>
{{STRUCTURE_1g1f|  PDB=1g1f  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1g1f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g1f OCA], [https://pdbe.org/1g1f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1g1f RCSB], [https://www.ebi.ac.uk/pdbsum/1g1f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1g1f ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PTN1_HUMAN 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.<ref>PMID:21135139</ref> <ref>PMID:22169477</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
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    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/g1/1g1f_consurf.spt"</scriptWhenChecked>
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    <text>to colour the structure by Evolutionary Conservation</text>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1g1f ConSurf].
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== Publication Abstract from PubMed ==
The protein tyrosine phosphatase PTP1B is responsible for negatively regulating insulin signaling by dephosphorylating the phosphotyrosine residues of the insulin receptor kinase (IRK) activation segment. Here, by integrating crystallographic, kinetic, and PTP1B peptide binding studies, we define the molecular specificity of this reaction. Extensive interactions are formed between PTP1B and the IRK sequence encompassing the tandem pTyr residues at 1162 and 1163 such that pTyr-1162 is selected at the catalytic site and pTyr-1163 is located within an adjacent pTyr recognition site. This selectivity is attributed to the 70-fold greater affinity for tandem pTyr-containing peptides relative to mono-pTyr peptides and predicts a hierarchical dephosphorylation process. Many elements of the PTP1B-IRK interaction are unique to PTP1B, indicating that it may be feasible to generate specific, small molecule inhibitors of this interaction to treat diabetes and obesity.


===CRYSTAL STRUCTURE OF PROTEIN TYROSINE PHOSPHATASE 1B COMPLEXED WITH A TRI-PHOSPHORYLATED PEPTIDE (RDI(PTR)ETD(PTR)(PTR)RK) FROM THE INSULIN RECEPTOR KINASE===
Molecular basis for the dephosphorylation of the activation segment of the insulin receptor by protein tyrosine phosphatase 1B.,Salmeen A, Andersen JN, Myers MP, Tonks NK, Barford D Mol Cell. 2000 Dec;6(6):1401-12. PMID:11163213<ref>PMID:11163213</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1g1f" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_11163213}}, adds the Publication Abstract to the page
*[[Tyrosine phosphatase 3D structures|Tyrosine phosphatase 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 11163213 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_11163213}}
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</StructureSection>
==About this Structure==
1G1F is a 2 chains structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G1F OCA].
 
==Reference==
<ref group="xtra">PMID:11163213</ref><references group="xtra"/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein-tyrosine-phosphatase]]
[[Category: Large Structures]]
[[Category: Andersen, J N.]]
[[Category: Andersen JN]]
[[Category: Barford, D.]]
[[Category: Barford D]]
[[Category: Myers, M P.]]
[[Category: Myers MP]]
[[Category: Salmeen, A.]]
[[Category: Salmeen A]]
[[Category: Tonks, N K.]]
[[Category: Tonks NK]]
[[Category: Peptide complex]]
[[Category: Tyrosine phosphatase]]
 
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