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3ro8

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==Crystal structure of the catalytic domain of XynA1 from Paenibacillus sp. JDR-2==
==Crystal structure of the catalytic domain of XynA1 from Paenibacillus sp. JDR-2==
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<StructureSection load='3ro8' size='340' side='right' caption='[[3ro8]], [[Resolution|resolution]] 1.34&Aring;' scene=''>
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<StructureSection load='3ro8' size='340' side='right'caption='[[3ro8]], [[Resolution|resolution]] 1.34&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3ro8]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Paenibacillus_sp._jdr-2 Paenibacillus sp. jdr-2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RO8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3RO8 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3ro8]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Paenibacillus_sp._JDR-2 Paenibacillus sp. JDR-2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RO8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3RO8 FirstGlance]. <br>
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</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=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.34&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rdk|3rdk]]</td></tr>
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<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=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Pjdr2_0221 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=324057 Paenibacillus sp. JDR-2])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3ro8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ro8 OCA], [https://pdbe.org/3ro8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ro8 RCSB], [https://www.ebi.ac.uk/pdbsum/3ro8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ro8 ProSAT]</span></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Endo-1,4-beta-xylanase Endo-1,4-beta-xylanase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.8 3.2.1.8] </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=3ro8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ro8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ro8 RCSB], [http://www.ebi.ac.uk/pdbsum/3ro8 PDBsum]</span></td></tr>
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</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/XYNA1_PAESJ XYNA1_PAESJ] Catalyzes the depolymerization of methylglucuronoxylan (MeGAXn), a beta-1,4 xylan in which 10% to 20% of the xylose residues are substituted with alpha-1,2-4-O-methylglucuronate (MeGA) residues, which is predominant in hemicellulose fractions of hardwood and crop residues. Generates xylobiose (X2) and aldotetrauronate (MeGAX3) as the predominant products of MeGAXn hydrolysis; these products are then directly assimilated by the bacterium for subsequent metabolism. Thus, allows the bacterium to efficiently use polymeric MeGAXn as a growth substrate.<ref>PMID:16461704</ref>
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The Gram-positive bacterium Paenibacillus sp. JDR-2 (PbJDR2) has been shown to have novel properties in the utilization of the abundant but chemically complex hemicellulosic sugar glucuronoxylan. Xylanase A1 of PbJDR2 (PbXynA1) has been implicated in an efficient process in which extracellular depolymerization of this polysaccharide is coupled to assimilation and intracellular metabolism. PbXynA1is a 154kDa cell wall anchored multimodular glycosyl hydrolase family 10 (GH10) xylanase. In this work, the 38kDa catalytic module of PbXynA1 has been structurally characterized revealing several new features not previously observed in structures of GH10 xylanases. These features are thought to facilitate hydrolysis of highly substituted, chemically complex xylans that may be the form found in close proximity to the cell wall of PbJDR2, an organism shown to have a preference for growth on polymeric glucuronoxylan.
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Novel structural features of xylanase A1 from Paenibacillus sp. JDR-2.,St John FJ, Preston JF, Pozharski E J Struct Biol. 2012 Sep 18. pii: S1047-8477(12)00249-3. doi:, 10.1016/j.jsb.2012.09.007. PMID:23000703<ref>PMID:23000703</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Endo-1,4-beta-xylanase]]
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[[Category: Large Structures]]
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[[Category: Paenibacillus sp. jdr-2]]
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[[Category: Paenibacillus sp. JDR-2]]
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[[Category: John, F J.St]]
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[[Category: Pozharski E]]
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[[Category: Pozharski, E]]
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[[Category: St John FJ]]
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[[Category: Gh10]]
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[[Category: Glycosyl hydrolase family 10]]
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[[Category: Hydrolase]]
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[[Category: Xylanase]]
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Current revision

Crystal structure of the catalytic domain of XynA1 from Paenibacillus sp. JDR-2

PDB ID 3ro8

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