1xas

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[[Image:1xas.png|left|200px]]
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==CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES==
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<StructureSection load='1xas' size='340' side='right' caption='[[1xas]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1xas]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptomyces_lividans Streptomyces lividans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XAS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1XAS FirstGlance]. <br>
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</td></tr><tr><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><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1xas FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xas OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1xas RCSB], [http://www.ebi.ac.uk/pdbsum/1xas PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/xa/1xas_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The crystal structure of the 32-kDa catalytic domain of the Streptomyces lividans xylanase A was solved by molecular isomorphous replacement methods and subsequently refined at 2.6-A resolution to a conventional crystallographic R factor of 0.21. This is the first successful structure determination of a member of the F family of endo-beta-1,4-D-glycanases. Unlike the recently determined xylanases of the G family (Wakarchuk, W. W., Campbell, R. L., Sung, W. L., Davoodi, J., and Yaguchi, M. (1994) Protein Sci. 3, 467-475), where the catalytic domains have a unique beta-sheet structure, the 32-kDa domain of the S. lividans xylanase A is folded into a complete (alpha/beta)8 barrel, the first such fold observed among beta-1,4-D-glycanases. The active site is located at the carbonyl end of the beta barrel. The crystal structure supports the earlier assignment of Glu-128 and Glu-236 as the catalytic amino acids (Moreau, A., Roberge, M., Manin, C., Shareck, F., Kluepfel, D., and Morosoli, R. (1994) Biochem. J., in press).
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{{STRUCTURE_1xas| PDB=1xas | SCENE= }}
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Crystal structure, at 2.6-A resolution, of the Streptomyces lividans xylanase A, a member of the F family of beta-1,4-D-glycanases.,Derewenda U, Swenson L, Green R, Wei Y, Morosoli R, Shareck F, Kluepfel D, Derewenda ZS J Biol Chem. 1994 Aug 19;269(33):20811-4. PMID:8063693<ref>PMID:8063693</ref>
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===CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES===
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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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{{ABSTRACT_PUBMED_8063693}}
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== References ==
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<references/>
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==About this Structure==
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__TOC__
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[[1xas]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Streptomyces_lividans Streptomyces lividans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XAS OCA].
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:008063693</ref><references group="xtra"/>
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[[Category: Endo-1,4-beta-xylanase]]
[[Category: Endo-1,4-beta-xylanase]]
[[Category: Streptomyces lividans]]
[[Category: Streptomyces lividans]]

Revision as of 18:53, 29 September 2014

CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES

1xas, resolution 2.60Å

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