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| | ==Crystal Structure of a Multiple Inositol Polyphosphate Phosphatase== | | ==Crystal Structure of a Multiple Inositol Polyphosphate Phosphatase== |
| - | <StructureSection load='4fdu' size='340' side='right' caption='[[4fdu]], [[Resolution|resolution]] 2.29Å' scene=''> | + | <StructureSection load='4fdu' size='340' side='right'caption='[[4fdu]], [[Resolution|resolution]] 2.29Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4fdu]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bactn Bactn]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FDU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FDU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4fdu]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacteroides_thetaiotaomicron_VPI-5482 Bacteroides thetaiotaomicron VPI-5482]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FDU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FDU FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=IHS:D-MYO-INOSITOL-HEXASULPHATE'>IHS</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=IHS:D-MYO-INOSITOL-HEXASULPHATE'>IHS</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4fdt|4fdt]]</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=4fdu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fdu OCA], [https://pdbe.org/4fdu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fdu RCSB], [https://www.ebi.ac.uk/pdbsum/4fdu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fdu ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BT_4744 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=226186 BACTN])</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=4fdu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fdu OCA], [http://pdbe.org/4fdu PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4fdu RCSB], [http://www.ebi.ac.uk/pdbsum/4fdu PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4fdu ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/Q89YI8_BACTN Q89YI8_BACTN] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bactn]] | + | [[Category: Bacteroides thetaiotaomicron VPI-5482]] |
| - | [[Category: Hemmings, A M]] | + | [[Category: Large Structures]] |
| - | [[Category: Li, A W.H]] | + | [[Category: Hemmings AM]] |
| - | [[Category: Hydrolase]] | + | [[Category: Li AWH]] |
| - | [[Category: Phosphatase]]
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| Structural highlights
Function
Q89YI8_BACTN
Publication Abstract from PubMed
Dietary InsP6 can modulate eukaryotic cell proliferation and has complex nutritive consequences, but its metabolism in the mammalian gastrointestinal tract is poorly understood. Therefore, we performed phylogenetic analyses of the gastrointestinal microbiome in order to search for candidate InsP6 phosphatases. We determined that prominent gut bacteria express homologs of the mammalian InsP6 phosphatase (MINPP) and characterized the enzyme from Bacteroides thetaiotaomicron (BtMinpp). We show that BtMinpp has exceptionally high catalytic activity, which we rationalize on the basis of mutagenesis studies and by determining its crystal structure at 1.9 A resolution. We demonstrate that BtMinpp is packaged inside outer membrane vesicles (OMVs) protecting the enzyme from degradation by gastrointestinal proteases. Moreover, we uncover an example of cross-kingdom cell-to-cell signaling, showing that the BtMinpp-OMVs interact with intestinal epithelial cells to promote intracellular Ca(2+) signaling. Our characterization of BtMinpp offers several directions for understanding how the microbiome serves human gastrointestinal physiology.
A Bacterial Homolog of a Eukaryotic Inositol Phosphate Signaling Enzyme Mediates Cross-kingdom Dialog in the Mammalian Gut.,Stentz R, Osborne S, Horn N, Li AW, Hautefort I, Bongaerts R, Rouyer M, Bailey P, Shears SB, Hemmings AM, Brearley CA, Carding SR Cell Rep. 2014 Feb 27;6(4):646-56. doi: 10.1016/j.celrep.2014.01.021. Epub 2014, Feb 13. PMID:24529702[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Stentz R, Osborne S, Horn N, Li AW, Hautefort I, Bongaerts R, Rouyer M, Bailey P, Shears SB, Hemmings AM, Brearley CA, Carding SR. A Bacterial Homolog of a Eukaryotic Inositol Phosphate Signaling Enzyme Mediates Cross-kingdom Dialog in the Mammalian Gut. Cell Rep. 2014 Feb 27;6(4):646-56. doi: 10.1016/j.celrep.2014.01.021. Epub 2014, Feb 13. PMID:24529702 doi:http://dx.doi.org/10.1016/j.celrep.2014.01.021
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