1gql: Difference between revisions
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[[Image: | ==STRUCTURE OF PSEUDOMONAS CELLULOSA ALPHA-D-GLUCURONIDASE COMPLEXED WITH GLUCURONIC ACID AND XYLOTRIOSE== | ||
<StructureSection load='1gql' size='340' side='right' caption='[[1gql]], [[Resolution|resolution]] 1.67Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1gql]] is a 2 chain structure with sequence from [http://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 [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1GQL FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><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><br> | |||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1gqi|1gqi]], [[1gqj|1gqj]], [[1gqk|1gqk]]</td></tr> | |||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Alpha-glucuronidase Alpha-glucuronidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.139 3.2.1.139] </span></td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gql FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gql OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1gql RCSB], [http://www.ebi.ac.uk/pdbsum/1gql PDBsum]</span></td></tr> | |||
<table> | |||
== 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/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
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 protonic assistance to leaving group departure with Glu393 and Asp365 both appropriately positioned to provide base-catalyzed assistance for inverting nucleophilic attack by water. | |||
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:11937059<ref>PMID:11937059</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
< | |||
[[Category: Alpha-glucuronidase]] | [[Category: Alpha-glucuronidase]] | ||
[[Category: Cellvibrio japonicus]] | [[Category: Cellvibrio japonicus]] | ||
Revision as of 09:08, 28 September 2014
STRUCTURE OF PSEUDOMONAS CELLULOSA ALPHA-D-GLUCURONIDASE COMPLEXED WITH GLUCURONIC ACID AND XYLOTRIOSE
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