4bpc: Difference between revisions
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==Structure of the Catalytic Domain of Protein Tyrosine Phosphatase Sigma in the Sulfenic Acid Form== | ==Structure of the Catalytic Domain of Protein Tyrosine Phosphatase Sigma in the Sulfenic Acid Form== | ||
<StructureSection load='4bpc' size='340' side='right' caption='[[4bpc]], [[Resolution|resolution]] 2.10Å' scene=''> | <StructureSection load='4bpc' size='340' side='right' caption='[[4bpc]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
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</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSO:S-HYDROXYCYSTEINE'>CSO</scene></td></tr> | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=CSO:S-HYDROXYCYSTEINE'>CSO</scene></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='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=4bpc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bpc OCA], [http://pdbe.org/4bpc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4bpc RCSB], [http://www.ebi.ac.uk/pdbsum/4bpc PDBsum]</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=4bpc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bpc OCA], [http://pdbe.org/4bpc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4bpc RCSB], [http://www.ebi.ac.uk/pdbsum/4bpc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4bpc ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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</div> | </div> | ||
<div class="pdbe-citations 4bpc" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 4bpc" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 19:01, 16 November 2017
Structure of the Catalytic Domain of Protein Tyrosine Phosphatase Sigma in the Sulfenic Acid FormStructure of the Catalytic Domain of Protein Tyrosine Phosphatase Sigma in the Sulfenic Acid Form
Structural highlights
Function[PTPRS_HUMAN] Interacts with LAR-interacting protein LIP.1. Publication Abstract from PubMedProtein tyrosine phosphatase sigma (PTPsigma) plays a vital role in neural development. The extracellular domain of PTPsigma binds to various proteoglycans, which control the activity of 2 intracellular PTP domains (D1 and D2). To understand the regulatory mechanism of PTPsigma, we carried out structural and biochemical analyses of PTPsigma D1D2. In the crystal structure analysis of a mutant form of D1D2 of PTPsigma, we unexpectedly found that the catalytic cysteine of D1 is oxidized to cysteine sulfenic acid, while that of D2 remained in its reduced form, suggesting that D1 is more sensitive to oxidation than D2. This finding contrasts previous observations on PTPalpha. The cysteine sulfenic acid of D1 was further confirmed by immunoblot and mass spectrometric analyses. The stabilization of the cysteine sulfenic acid in the active site of PTP suggests that the formation of cysteine sulfenic acid may function as a stable intermediate during the redox-regulation of PTPs. Structure of the catalytic domain of protein tyrosine phosphatase sigma in the sulfenic acid form.,Jeon TJ, Chien PN, Chun HJ, Ryu SE Mol Cells. 2013 May 30. PMID:23820885[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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