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4bx2

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<StructureSection load='4bx2' size='340' side='right'caption='[[4bx2]], [[Resolution|resolution]] 2.19&Aring;' scene=''>
<StructureSection load='4bx2' size='340' side='right'caption='[[4bx2]], [[Resolution|resolution]] 2.19&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4bx2]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4BX2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4BX2 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4bx2]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4BX2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4BX2 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4bx0|4bx0]], [[4bx3|4bx3]]</td></tr>
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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=4bx2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bx2 OCA], [https://pdbe.org/4bx2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4bx2 RCSB], [https://www.ebi.ac.uk/pdbsum/4bx2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4bx2 ProSAT]</span></td></tr>
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<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=4bx2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4bx2 OCA], [http://pdbe.org/4bx2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4bx2 RCSB], [http://www.ebi.ac.uk/pdbsum/4bx2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4bx2 ProSAT]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/PLPP_MOUSE PLPP_MOUSE]] Protein serine phosphatase that dephosphorylates 'Ser-3' in cofilin and probably also dephosphorylates phospho-serine residues in DSTN. Regulates cofilin-dependent actin cytoskeleton reorganization. Required for normal progress through mitosis and normal cytokinesis. Does not dephosphorylate phospho-threonines in LIMK1. Does not dephosphorylate peptides containing phospho-tyrosine. Pyridoxal phosphate phosphatase. Has some activity towards pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate (PMP) and pyridoxine 5'-phosphate (PNP), with a highest activity with PLP followed by PNP (By similarity).
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[[https://www.uniprot.org/uniprot/PLPP_MOUSE PLPP_MOUSE]] Protein serine phosphatase that dephosphorylates 'Ser-3' in cofilin and probably also dephosphorylates phospho-serine residues in DSTN. Regulates cofilin-dependent actin cytoskeleton reorganization. Required for normal progress through mitosis and normal cytokinesis. Does not dephosphorylate phospho-threonines in LIMK1. Does not dephosphorylate peptides containing phospho-tyrosine. Pyridoxal phosphate phosphatase. Has some activity towards pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate (PMP) and pyridoxine 5'-phosphate (PNP), with a highest activity with PLP followed by PNP (By similarity).
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Mammalian phosphatases of the haloacid dehalogenase (HAD) superfamily have emerged as important regulators of physiology and disease. Many of these enzymes are stable homodimers, yet the role of their dimerization is largely unknown. Here, we explore the function of the obligatory homodimerization of chronophin, a mammalian HAD phosphatase known to dephosphorylate pyridoxal 5'-phosphatase (PLP) and serine/threonine-phosphorylated proteins. The exchange of two residues in the murine chronophin homodimerization interface (chronophinAla194Lys, Ala195Lys; chronophinKK) yields a constitutive monomer, both in vitro and in cells. The catalytic activity of monomeric chronophin towards PLP is strongly impaired. X-ray crystallographic studies of chronophinKK reveal that dimer formation is essential for an intermolecular arginine-arginine-tryptophan stacking interaction that positions a critical histidine residue in the substrate specificity loop of chronophin for PLP coordination. Analysis of all available crystal structures of HAD hydrolases that are grouped together with chronophin in the C2a-type structural subfamily uncovers a highly conserved mode of dimerization that results in intermolecular contacts involving the substrate specificity loop. Our results explain how the dimerization of HAD hydrolases contributes to their catalytic efficiency and substrate specificity.
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Chronophin dimerization is required for proper positioning of its substrate specificity loop.,Kestler C, Knobloch G, Tessmer I, Jeanclos E, Schindelin H, Gohla A J Biol Chem. 2013 Dec 14. PMID:24338687<ref>PMID:24338687</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 4bx2" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Lk3 transgenic mice]]
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[[Category: Mus musculus]]
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[[Category: Gohla, A]]
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[[Category: Gohla A]]
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[[Category: Knobloch, G]]
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[[Category: Knobloch G]]
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[[Category: Schindelin, H]]
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[[Category: Schindelin H]]
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[[Category: Had phosphatase]]
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[[Category: Had-like hydrolase]]
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[[Category: Hydrolase]]
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[[Category: Pdxp]]
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Revision as of 17:14, 7 September 2022

Crystal Structure of murine Chronophin (Pyridoxal Phosphate Phosphatase) in complex with Beryllium trifluoride

PDB ID 4bx2

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