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| | ==Crystal Structure of Phosphonoacetate hydrolase from Sinorhizobium meliloti 1021 in APO form== | | ==Crystal Structure of Phosphonoacetate hydrolase from Sinorhizobium meliloti 1021 in APO form== |
| - | <StructureSection load='3szy' size='340' side='right' caption='[[3szy]], [[Resolution|resolution]] 1.35Å' scene=''> | + | <StructureSection load='3szy' size='340' side='right'caption='[[3szy]], [[Resolution|resolution]] 1.35Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3szy]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Ensifer_meliloti Ensifer meliloti]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SZY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3SZY FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3szy]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Sinorhizobium_meliloti_1021 Sinorhizobium meliloti 1021]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SZY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3SZY FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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]] 1.35Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3szz|3szz]], [[3t00|3t00]], [[3t01|3t01]], [[3t02|3t02]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">phnA, RB0978, SM_b21538 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=266834 Ensifer meliloti])</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=3szy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3szy OCA], [https://pdbe.org/3szy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3szy RCSB], [https://www.ebi.ac.uk/pdbsum/3szy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3szy ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Nucleotide_diphosphatase Nucleotide diphosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.1.9 3.6.1.9] </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=3szy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3szy OCA], [http://pdbe.org/3szy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3szy RCSB], [http://www.ebi.ac.uk/pdbsum/3szy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3szy ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| - | <div style="background-color:#fffaf0;">
| + | == Function == |
| - | == Publication Abstract from PubMed == | + | [https://www.uniprot.org/uniprot/Q92UV8_RHIME Q92UV8_RHIME] |
| - | Bacteria have evolved pathways to metabolize phosphonates as a nutrient source for phosphorus. In Sinorhizobium meliloti 1021, 2-aminoethylphosphonate is catabolized to phosphonoacetate, which is converted to acetate and inorganic phosphate by phosphonoacetate hydrolase (PhnA). Here we present detailed biochemical and structural characterization of PhnA that provides insights into the mechanism of C-P bond cleavage. The 1.35 A resolution crystal structure reveals a catalytic core similar to those of alkaline phosphatases and nucleotide pyrophosphatases but with notable differences, such as a longer metal-metal distance. Detailed structure-guided analysis of active site residues and four additional cocrystal structures with phosphonoacetate substrate, acetate, phosphonoformate inhibitor, and a covalently bound transition state mimic provide insight into active site features that may facilitate cleavage of the C-P bond. These studies expand upon the array of reactions that can be catalyzed by enzymes of the alkaline phosphatase superfamily.
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| - | Structural and mechanistic insights into C-p bond hydrolysis by phosphonoacetate hydrolase.,Agarwal V, Borisova SA, Metcalf WW, van der Donk WA, Nair SK Chem Biol. 2011 Oct 28;18(10):1230-40. PMID:22035792<ref>PMID:22035792</ref>
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| - | </div>
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| - | <div class="pdbe-citations 3szy" style="background-color:#fffaf0;"></div>
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| - | == References ==
| + | |
| - | <references/>
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Ensifer meliloti]] | + | [[Category: Large Structures]] |
| - | [[Category: Nucleotide diphosphatase]] | + | [[Category: Sinorhizobium meliloti 1021]] |
| - | [[Category: Agarwal, V]] | + | [[Category: Agarwal V]] |
| - | [[Category: Nair, S K]] | + | [[Category: Nair SK]] |
| - | [[Category: Alkaline phosphatase superfamily]]
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| - | [[Category: Hydrolase]]
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