1cxk

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[[Image:1cxk.png|left|200px]]
 
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{{STRUCTURE_1cxk| PDB=1cxk | SCENE= }}
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==COMPLEX BETWEEN A MALTONONAOSE SUBSTRATE AND BACILLUS CIRCULANS STRAIN 251 CGTASE E257Q/D229N==
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<StructureSection load='1cxk' size='340' side='right'caption='[[1cxk]], [[Resolution|resolution]] 2.09&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1cxk]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Niallia_circulans Niallia circulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CXK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CXK FirstGlance]. <br>
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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]] 2.09&#8491;</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=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=PRD_900001:alpha-maltose'>PRD_900001</scene>, <scene name='pdbligand=PRD_900010:alpha-maltotetraose'>PRD_900010</scene></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=1cxk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1cxk OCA], [https://pdbe.org/1cxk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1cxk RCSB], [https://www.ebi.ac.uk/pdbsum/1cxk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1cxk ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/CDGT2_NIACI CDGT2_NIACI]
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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/cx/1cxk_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/main_output.php?pdb_ID=1cxk 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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Cyclodextrin glycosyltransferase (CGTase) is an enzyme of the alpha-amylase family, which uses a double displacement mechanism to process alpha-linked glucose polymers. We have determined two X-ray structures of CGTase complexes, one with an intact substrate at 2.1 A resolution, and the other with a covalently bound reaction intermediate at 1.8 A resolution. These structures give evidence for substrate distortion and the covalent character of the intermediate and for the first time show, in atomic detail, how catalysis in the alpha-amylase family proceeds by the concerted action of all active site residues.
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===COMPLEX BETWEEN A MALTONONAOSE SUBSTRATE AND BACILLUS CIRCULANS STRAIN 251 CGTASE E257Q/D229N===
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X-ray structures along the reaction pathway of cyclodextrin glycosyltransferase elucidate catalysis in the alpha-amylase family.,Uitdehaag JC, Mosi R, Kalk KH, van der Veen BA, Dijkhuizen L, Withers SG, Dijkstra BW Nat Struct Biol. 1999 May;6(5):432-6. PMID:10331869<ref>PMID:10331869</ref>
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{{ABSTRACT_PUBMED_10331869}}
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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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==About this Structure==
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<div class="pdbe-citations 1cxk" style="background-color:#fffaf0;"></div>
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[[1cxk]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacillus_circulans Bacillus circulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CXK OCA].
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==See Also==
==See Also==
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*[[Glycosyltransferase|Glycosyltransferase]]
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*[[Glycosyltransferase 3D structures|Glycosyltransferase 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:010331869</ref><references group="xtra"/>
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__TOC__
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[[Category: Bacillus circulans]]
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</StructureSection>
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[[Category: Cyclomaltodextrin glucanotransferase]]
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[[Category: Large Structures]]
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[[Category: Dijkstra, B W.]]
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[[Category: Niallia circulans]]
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[[Category: Kalk, K H.]]
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[[Category: Dijkstra BW]]
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[[Category: Uitdehaag, J C.M.]]
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[[Category: Kalk KH]]
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[[Category: Alpha-amylase family]]
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[[Category: Uitdehaag JCM]]
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[[Category: Glycosyl hydrolase family 13]]
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[[Category: Maltononaose]]
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[[Category: Substrate complex]]
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[[Category: Transferase]]
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Current revision

COMPLEX BETWEEN A MALTONONAOSE SUBSTRATE AND BACILLUS CIRCULANS STRAIN 251 CGTASE E257Q/D229N

PDB ID 1cxk

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