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==Structure of the PTP-like myo-inositol phosphatase from Selenomonas ruminantium in complex with myo-inositol-(1,4,5)-trikisphosphate==
==Structure of the PTP-like myo-inositol phosphatase from Selenomonas ruminantium in complex with myo-inositol-(1,4,5)-trikisphosphate==
<StructureSection load='4wu2' size='340' side='right' caption='[[4wu2]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
<StructureSection load='4wu2' size='340' side='right'caption='[[4wu2]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4wu2]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WU2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4WU2 FirstGlance]. <br>
<table><tr><td colspan='2'>[[4wu2]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Selenomonas_ruminantium Selenomonas ruminantium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WU2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WU2 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=I3P:D-MYO-INOSITOL-1,4,5-TRIPHOSPHATE'>I3P</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.15&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3mmj|3mmj]], [[4wty|4wty]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=I3P:D-MYO-INOSITOL-1,4,5-TRIPHOSPHATE'>I3P</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3-phytase 3-phytase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.8 3.1.3.8] </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=4wu2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wu2 OCA], [https://pdbe.org/4wu2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4wu2 RCSB], [https://www.ebi.ac.uk/pdbsum/4wu2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4wu2 ProSAT]</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=4wu2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wu2 OCA], [http://pdbe.org/4wu2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4wu2 RCSB], [http://www.ebi.ac.uk/pdbsum/4wu2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4wu2 ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/Q7WUJ1_SELRU Q7WUJ1_SELRU]
Protein-tyrosine phosphatase-like inositol polyphosphatases are microbial enzymes that catalyze the stepwise removal of one or more phosphates from highly phosphorylated myo-inositols via a relatively ordered pathway. To understand the substrate specificity and kinetic mechanism of these enzymes we have determined high resolution, single crystal, x-ray crystallographic structures of inactive Selenomonas ruminantium PhyA in complex with myo-inositol hexa- and pentakisphosphate. These structures provide the first glimpse of a myo-inositol polyphosphatase-ligand complex consistent with its known specificity and reveal novel features of the kinetic mechanism. To complement the structural studies, fluorescent binding assays have been developed and demonstrate that the K(d) for this enzyme is several orders of magnitude lower than the K(m). Together with rapid kinetics data, these results suggest that the protein tyrosine phosphatase-like inositol polyphosphatases have a two-step, substrate-binding mechanism that facilitates catalysis.


Substrate binding in protein-tyrosine phosphatase-like inositol polyphosphatases.,Gruninger RJ, Dobing S, Smith AD, Bruder LM, Selinger LB, Wieden HJ, Mosimann SC J Biol Chem. 2012 Mar 23;287(13):9722-30. doi: 10.1074/jbc.M111.309872. Epub 2011, Dec 2. PMID:22139834<ref>PMID:22139834</ref>
==See Also==
 
*[[Phytase 3D structures|Phytase 3D structures]]
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4wu2" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: 3-phytase]]
[[Category: Large Structures]]
[[Category: Bruder, L M]]
[[Category: Selenomonas ruminantium]]
[[Category: Mosimann, S C]]
[[Category: Bruder LM]]
[[Category: Hydrolase]]
[[Category: Mosimann SC]]

Latest revision as of 10:36, 27 September 2023

Structure of the PTP-like myo-inositol phosphatase from Selenomonas ruminantium in complex with myo-inositol-(1,4,5)-trikisphosphateStructure of the PTP-like myo-inositol phosphatase from Selenomonas ruminantium in complex with myo-inositol-(1,4,5)-trikisphosphate

Structural highlights

4wu2 is a 2 chain structure with sequence from Selenomonas ruminantium. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.15Å
Ligands:, , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

Q7WUJ1_SELRU

See Also

4wu2, resolution 2.15Å

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