1sug

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[[Image:1sug.jpg|left|200px]]
 
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{{Structure
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==1.95 A structure of apo protein tyrosine phosphatase 1B==
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|PDB= 1sug |SIZE=350|CAPTION= <scene name='initialview01'>1sug</scene>, resolution 1.95&Aring;
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<StructureSection load='1sug' size='340' side='right'caption='[[1sug]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>
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<table><tr><td colspan='2'>[[1sug]] is a 1 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=1SUG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SUG FirstGlance]. <br>
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|ACTIVITY= <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>
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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]] 1.95&#8491;</td></tr>
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|GENE= PTPN1, PTP1B ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1sug FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sug OCA], [https://pdbe.org/1sug PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1sug RCSB], [https://www.ebi.ac.uk/pdbsum/1sug PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1sug ProSAT]</span></td></tr>
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|RELATEDENTRY=[[2hnp|2hnp]]
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1sug FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1sug OCA], [http://www.ebi.ac.uk/pdbsum/1sug PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1sug RCSB]</span>
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== Function ==
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}}
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[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>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/su/1sug_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=1sug ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Protein tyrosine phosphatase 1B (PTP1B) plays a key role as a negative regulator of insulin and leptin signalling and is therefore considered to be an important molecular target for the treatment of type 2 diabetes and obesity. Detailed structural information about the structure of PTP1B, including the conformation and flexibility of active-site residues as well as the water-molecule network, is a key issue in understanding ligand binding and enzyme kinetics and in structure-based drug design. A 1.95 A apo PTP1B structure has been obtained, showing four highly coordinated water molecules in the active-site pocket of the enzyme; hence, the active site is highly solvated in the apo state. Three of the water molecules are located at positions that approximately correspond to the positions of the phosphate O atoms of the natural substrate phosphotyrosine and form a similar network of hydrogen bonds. The active-site WPD-loop was found to be in the closed conformation, in contrast to previous observations of wild-type PTPs in the apo state, in which the WPD-loop is open. The closed conformation is stabilized by a network of hydrogen bonds. These results provide new insights into and understanding of the active site of PTP1B and form a novel basis for structure-based inhibitor design.
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'''1.95 A structure of apo protein tyrosine phosphatase 1B'''
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Water-molecule network and active-site flexibility of apo protein tyrosine phosphatase 1B.,Pedersen AK, Peters G GH, Moller KB, Iversen LF, Kastrup JS Acta Crystallogr D Biol Crystallogr. 2004 Sep;60(Pt 9):1527-34. Epub 2004, Aug 26. PMID:15333922<ref>PMID:15333922</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1sug" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Protein tyrosine phosphatase 1B (PTP1B) plays a key role as a negative regulator of insulin and leptin signalling and is therefore considered to be an important molecular target for the treatment of type 2 diabetes and obesity. Detailed structural information about the structure of PTP1B, including the conformation and flexibility of active-site residues as well as the water-molecule network, is a key issue in understanding ligand binding and enzyme kinetics and in structure-based drug design. A 1.95 A apo PTP1B structure has been obtained, showing four highly coordinated water molecules in the active-site pocket of the enzyme; hence, the active site is highly solvated in the apo state. Three of the water molecules are located at positions that approximately correspond to the positions of the phosphate O atoms of the natural substrate phosphotyrosine and form a similar network of hydrogen bonds. The active-site WPD-loop was found to be in the closed conformation, in contrast to previous observations of wild-type PTPs in the apo state, in which the WPD-loop is open. The closed conformation is stabilized by a network of hydrogen bonds. These results provide new insights into and understanding of the active site of PTP1B and form a novel basis for structure-based inhibitor design.
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*[[Tyrosine phosphatase 3D structures|Tyrosine phosphatase 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1SUG is a [[Single protein]] structure of sequence 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=1SUG OCA].
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__TOC__
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</StructureSection>
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==Reference==
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Water-molecule network and active-site flexibility of apo protein tyrosine phosphatase 1B., Pedersen AK, Peters G GH, Moller KB, Iversen LF, Kastrup JS, Acta Crystallogr D Biol Crystallogr. 2004 Sep;60(Pt 9):1527-34. Epub 2004, Aug 26. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15333922 15333922]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Protein-tyrosine-phosphatase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Iversen LF]]
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[[Category: Iversen, L F.]]
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[[Category: Kastrup JS]]
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[[Category: Kastrup, J S.]]
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[[Category: Moller KB]]
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[[Category: Moller, K B.]]
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[[Category: Pedersen AK]]
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[[Category: Pedersen, A K.]]
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[[Category: Peters GH]]
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[[Category: Peters, G H.]]
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[[Category: water molecule network]]
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[[Category: wpd-loop closed]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:47:07 2008''
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Current revision

1.95 A structure of apo protein tyrosine phosphatase 1B

PDB ID 1sug

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