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New page: left|200px<br /> <applet load="1gql" size="450" color="white" frame="true" align="right" spinBox="true" caption="1gql, resolution 1.67Å" /> '''STRUCTURE OF PSEUDO...
 
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[[Image:1gql.gif|left|200px]]<br />
<applet load="1gql" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1gql, resolution 1.67&Aring;" />
'''STRUCTURE OF PSEUDOMONAS CELLULOSA ALPHA-D-GLUCURONIDASE COMPLEXED WITH GLUCURONIC ACID AND XYLOTRIOSE'''<br />


==Overview==
==Structure of Pseudomonas cellulosa alpha-D-glucuronidase complexed with glucuronic acid and xylotriose==
Alpha-glucuronidases, components of an ensemble of enzymes central to the, recycling of photosynthetic biomass, remove the alpha-1,2 linked, 4-O-methyl glucuronic acid from xylans. The structure of the, alpha-glucuronidase, GlcA67A, from Pseudomonas cellulosa reveals three, domains, the central of which is a (beta/alpha)(8) barrel housing the, catalytic apparatus. Complexes of the enzyme with the individual reaction, products, either xylobiose or glucuronic acid, and the ternary complex of, both glucuronic acid and xylotriose reveal a "blind" pocket which selects, for short decorated xylooligosaccharides substituted with the uronic acid, at their nonreducing end, consistent with kinetic data. The catalytic, center reveals a constellation of carboxylates; Glu292 is poised to, provide ... [[http://ispc.weizmann.ac.il/pmbin/getpm?11937059 (full description)]]
<StructureSection load='1gql' size='340' side='right'caption='[[1gql]], [[Resolution|resolution]] 1.67&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1gql]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Cellvibrio_japonicus Cellvibrio japonicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GQL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1GQL FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.67&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BDP:BETA-D-GLUCOPYRANURONIC+ACID'>BDP</scene>, <scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=XYP:BETA-D-XYLOPYRANOSE'>XYP</scene></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=1gql FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gql OCA], [https://pdbe.org/1gql PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1gql RCSB], [https://www.ebi.ac.uk/pdbsum/1gql PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1gql ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AGUA_CELJU AGUA_CELJU] Alpha-glucuronidase involved in the hydrolysis of xylan, a major structural heterogeneous polysaccharide found in plant biomass representing the second most abundant polysaccharide in the biosphere, after cellulose. It catalyzes the cleavage of the alpha-1,2-glycosidic bond at the non-reducing end of 4-O-methyl-D-glucuronic acid (4-O-MeGlcA) side chain of short xylooligosaccharides and releases 4-O-methylglucuronic acid. It can also hydrolyze small soluble oligosaccharides such as dobiouronic acid, aldotriouronic acid, aldotetraouronic acid, and aldopentaouronic acid.<ref>PMID:11937059</ref> <ref>PMID:12169619</ref> <ref>PMID:12654910</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/gq/1gql_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1gql ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1GQL is a [[http://en.wikipedia.org/wiki/Single_protein Single protein]] structure of sequence from [[http://en.wikipedia.org/wiki/Pseudomonas_cellulosa Pseudomonas cellulosa]] with BDP, CO and EDO as [[http://en.wikipedia.org/wiki/ligands ligands]]. Active as [[http://en.wikipedia.org/wiki/ ]], with EC number [[http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.139 3.2.1.139]]. Full crystallographic information is available from [[http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1GQL OCA]].
*[[Glucuronisidase 3D structures|Glucuronisidase 3D structures]]
 
== References ==
==Reference==
<references/>
The structural basis for catalysis and specificity of the Pseudomonas cellulosa alpha-glucuronidase, GlcA67A., Nurizzo D, Nagy T, Gilbert HJ, Davies GJ, Structure. 2002 Apr;10(4):547-56. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11937059 11937059]
__TOC__
[[Category: Pseudomonas cellulosa]]
</StructureSection>
[[Category: Single protein]]
[[Category: Cellvibrio japonicus]]
[[Category: Davies, G.J.]]
[[Category: Large Structures]]
[[Category: Gilbert, H.J.]]
[[Category: Davies GJ]]
[[Category: Nagy, T.]]
[[Category: Gilbert HJ]]
[[Category: Nurizzo, D.]]
[[Category: Nagy T]]
[[Category: BDP]]
[[Category: Nurizzo D]]
[[Category: CO]]
[[Category: EDO]]
[[Category: (alpha-beta)8 barrel]]
[[Category: glucuronic acid]]
[[Category: glucuronidase]]
[[Category: glycoside hydrolase]]
[[Category: structure]]
[[Category: xylotriose]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Oct 29 22:07:22 2007''

Latest revision as of 11:23, 27 March 2024

Structure of Pseudomonas cellulosa alpha-D-glucuronidase complexed with glucuronic acid and xylotriose

1gql, resolution 1.67Å

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