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==Crystal structure of a Low Molecular Weight Phosphotyrosine phosphatase from Vibrio choleraeO395==
==Crystal structure of a Low Molecular Weight Phosphotyrosine phosphatase from Vibrio choleraeO395==
<StructureSection load='4lrq' size='340' side='right' caption='[[4lrq]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
<StructureSection load='4lrq' size='340' side='right'caption='[[4lrq]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4lrq]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LRQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4LRQ FirstGlance]. <br>
<table><tr><td colspan='2'>[[4lrq]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_cholerae_O395 Vibrio cholerae O395]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LRQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4LRQ FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MPO:3[N-MORPHOLINO]PROPANE+SULFONIC+ACID'>MPO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.45&#8491;</td></tr>
<tr><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='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MPO:3[N-MORPHOLINO]PROPANE+SULFONIC+ACID'>MPO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4lrq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lrq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4lrq RCSB], [http://www.ebi.ac.uk/pdbsum/4lrq PDBsum]</span></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=4lrq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lrq OCA], [https://pdbe.org/4lrq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4lrq RCSB], [https://www.ebi.ac.uk/pdbsum/4lrq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4lrq ProSAT]</span></td></tr>
<table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/A0A0H3ALA8_VIBC3 A0A0H3ALA8_VIBC3]
Low molecular weight protein tyrosine phosphatase (LMWPTP) is a group of phosphotyrosine phosphatase ubiquitously found in a wide range of organisms ranging from bacteria to mammals. Dimerization in the LMWPTP family has been reported earlier which follows a common mechanism involving active site residues leading to an enzymatically inactive species. Here we report a novel form of dimerization in a LMWPTP from Vibrio cholera 0395 (VcLMWPTP-1). Studies in solution reveal the existence of the dimer in solution while kinetic study depicts the active form of the enzyme. This indicates that the mode of dimerization in VcLMWPTP-1 is different from others where active site residues are not involved in the process. A high resolution (1.45A) crystal structure of VcLMWPTP-1 confirms a different mode of dimerization where the active site is catalytically accessible as evident by a tightly bound substrate mimicking ligand, MOPS at the active site pocket. Although being a member of a prokaryotic protein family, VcLMWPTP-1 structure resembles very closely to LMWPTP from a eukaryote, Entamoeba histolytica. It also delineates the diverse surface properties around the active site of the enzyme.
 
Atomic resolution crystal structure of VcLMWPTP-1 from Vibrio cholerae O395: Insights into a novel mode of dimerization in the low molecular weight protein tyrosine phosphatase family.,Nath S, Banerjee R, Sen U Biochem Biophys Res Commun. 2014 Jun 6. pii: S0006-291X(14)01018-3. doi:, 10.1016/j.bbrc.2014.05.129. PMID:24909685<ref>PMID:24909685</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Protein-tyrosine-phosphatase]]
[[Category: Large Structures]]
[[Category: Banerjee, R.]]
[[Category: Vibrio cholerae O395]]
[[Category: Nath, S.]]
[[Category: Banerjee R]]
[[Category: Sen, U.]]
[[Category: Nath S]]
[[Category: Hydrolase]]
[[Category: Sen U]]
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