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| | <StructureSection load='5jou' size='340' side='right'caption='[[5jou]], [[Resolution|resolution]] 1.50Å' scene=''> | | <StructureSection load='5jou' size='340' side='right'caption='[[5jou]], [[Resolution|resolution]] 1.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5jou]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5JOU OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5JOU FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5jou]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacteroides_ovatus Bacteroides ovatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5JOU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5JOU FirstGlance]. <br> |
| - | </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=NI:NICKEL+(II)+ION'>NI</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]] 1.5Å</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Alpha-D-xyloside_xylohydrolase Alpha-D-xyloside xylohydrolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.177 3.2.1.177] </span></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=NI:NICKEL+(II)+ION'>NI</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5jou FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5jou OCA], [http://pdbe.org/5jou PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5jou RCSB], [http://www.ebi.ac.uk/pdbsum/5jou PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5jou ProSAT]</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=5jou FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5jou OCA], [https://pdbe.org/5jou PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5jou RCSB], [https://www.ebi.ac.uk/pdbsum/5jou PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5jou ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/GH31A_BACO1 GH31A_BACO1]] Catalyzes the liberation of alpha-xylose from the non-reducing terminal glucose of xyloglucan oligosaccharides in xyloglucan degradation, converting the 'X' to 'G' units.<ref>PMID:24463512</ref> | + | [https://www.uniprot.org/uniprot/GH31A_BACO1 GH31A_BACO1] Catalyzes the liberation of alpha-xylose from the non-reducing terminal glucose of xyloglucan oligosaccharides in xyloglucan degradation, converting the 'X' to 'G' units.<ref>PMID:24463512</ref> |
| | <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: Alpha-D-xyloside xylohydrolase]] | + | [[Category: Bacteroides ovatus]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Brumer, H]] | + | [[Category: Brumer H]] |
| - | [[Category: Coyle, T]] | + | [[Category: Coyle T]] |
| - | [[Category: Davies, G J]] | + | [[Category: Davies GJ]] |
| - | [[Category: Hemsworth, G R]] | + | [[Category: Hemsworth GR]] |
| - | [[Category: Larsbrink, J]] | + | [[Category: Larsbrink J]] |
| - | [[Category: Sobala, L F]] | + | [[Category: Sobala LF]] |
| - | [[Category: Spadiut, O]] | + | [[Category: Spadiut O]] |
| - | [[Category: Stepper, J]] | + | [[Category: Stepper J]] |
| - | [[Category: Stubbs, K A]] | + | [[Category: Stubbs KA]] |
| - | [[Category: Thompson, A J]] | + | [[Category: Thompson AJ]] |
| - | [[Category: Gh31]]
| + | |
| - | [[Category: Glycoside hydrolase]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| Structural highlights
Function
GH31A_BACO1 Catalyzes the liberation of alpha-xylose from the non-reducing terminal glucose of xyloglucan oligosaccharides in xyloglucan degradation, converting the 'X' to 'G' units.[1]
Publication Abstract from PubMed
The human gastrointestinal tract harbours myriad bacterial species, collectively termed the microbiota, that strongly influence human health. Symbiotic members of our microbiota play a pivotal role in the digestion of complex carbohydrates that are otherwise recalcitrant to assimilation. Indeed, the intrinsic human polysaccharide-degrading enzyme repertoire is limited to various starch-based substrates; more complex polysaccharides demand microbial degradation. Select Bacteroidetes are responsible for the degradation of the ubiquitous vegetable xyloglucans (XyGs), through the concerted action of cohorts of enzymes and glycan-binding proteins encoded by specific xyloglucan utilization loci (XyGULs). Extending recent (meta)genomic, transcriptomic and biochemical analyses, significant questions remain regarding the structural biology of the molecular machinery required for XyG saccharification. Here, we reveal the three-dimensional structures of an alpha-xylosidase, a beta-glucosidase, and two alpha-l-arabinofuranosidases from the Bacteroides ovatus XyGUL. Aided by bespoke ligand synthesis, our analyses highlight key adaptations in these enzymes that confer individual specificity for xyloglucan side chains and dictate concerted, stepwise disassembly of xyloglucan oligosaccharides. In harness with our recent structural characterization of the vanguard endo-xyloglucanse and cell-surface glycan-binding proteins, the present analysis provides a near-complete structural view of xyloglucan recognition and catalysis by XyGUL proteins.
Structural dissection of a complex Bacteroides ovatus gene locus conferring xyloglucan metabolism in the human gut.,Hemsworth GR, Thompson AJ, Stepper J, Sobala LF, Coyle T, Larsbrink J, Spadiut O, Goddard-Borger ED, Stubbs KA, Brumer H, Davies GJ Open Biol. 2016 Jul;6(7). pii: 160142. doi: 10.1098/rsob.160142. PMID:27466444[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Larsbrink J, Rogers TE, Hemsworth GR, McKee LS, Tauzin AS, Spadiut O, Klinter S, Pudlo NA, Urs K, Koropatkin NM, Creagh AL, Haynes CA, Kelly AG, Cederholm SN, Davies GJ, Martens EC, Brumer H. A discrete genetic locus confers xyloglucan metabolism in select human gut Bacteroidetes. Nature. 2014 Jan 19. doi: 10.1038/nature12907. PMID:24463512 doi:http://dx.doi.org/10.1038/nature12907
- ↑ Hemsworth GR, Thompson AJ, Stepper J, Sobala LF, Coyle T, Larsbrink J, Spadiut O, Goddard-Borger ED, Stubbs KA, Brumer H, Davies GJ. Structural dissection of a complex Bacteroides ovatus gene locus conferring xyloglucan metabolism in the human gut. Open Biol. 2016 Jul;6(7). pii: 160142. doi: 10.1098/rsob.160142. PMID:27466444 doi:http://dx.doi.org/10.1098/rsob.160142
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