3mmj
From Proteopedia
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| - | + | ==Structure of the PTP-like phytase from Selenomonas ruminantium in complex with myo-inositol hexakisphosphate== | |
| - | + | <StructureSection load='3mmj' size='340' side='right' caption='[[3mmj]], [[Resolution|resolution]] 1.60Å' scene=''> | |
| - | + | == Structural highlights == | |
| + | <table><tr><td colspan='2'>[[3mmj]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Selenomonas_ruminantium Selenomonas ruminantium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MMJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3MMJ FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=IHP:INOSITOL+HEXAKISPHOSPHATE'>IHP</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2b4u|2b4u]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">phyA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=971 Selenomonas ruminantium])</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=3mmj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mmj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3mmj RCSB], [http://www.ebi.ac.uk/pdbsum/3mmj PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | 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> | |
| - | + | ||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Selenomonas ruminantium]] | [[Category: Selenomonas ruminantium]] | ||
| - | [[Category: Gruninger, R J | + | [[Category: Gruninger, R J]] |
| - | [[Category: Mosimann, S C | + | [[Category: Mosimann, S C]] |
| - | [[Category: Selinger, L B | + | [[Category: Selinger, L B]] |
[[Category: Hydrolase]] | [[Category: Hydrolase]] | ||
[[Category: Inositol phosphatase]] | [[Category: Inositol phosphatase]] | ||
Revision as of 16:00, 18 December 2014
Structure of the PTP-like phytase from Selenomonas ruminantium in complex with myo-inositol hexakisphosphate
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