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6cgt

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[[Image:6cgt.gif|left|200px]]
 
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{{Structure
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==HOXA COMPLEX OF CYCLODEXTRIN GLYCOSYLTRANSFERASE MUTANT==
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|PDB= 6cgt |SIZE=350|CAPTION= <scene name='initialview01'>6cgt</scene>, resolution 2.6&Aring;
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<StructureSection load='6cgt' size='340' side='right'caption='[[6cgt]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene>
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<table><tr><td colspan='2'>[[6cgt]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_24 Atcc 24]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6CGT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6CGT FirstGlance]. <br>
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|ACTIVITY= [http://en.wikipedia.org/wiki/Cyclomaltodextrin_glucanotransferase Cyclomaltodextrin glucanotransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.19 2.4.1.19]
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</td></tr><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=OPG:OXIRANPSEUDOGLUCOSE'>OPG</scene>, <scene name='pdbligand=DAG:4,6-DIDEOXY-4-AMINO-BETA-D-GLUCOPYRANOSIDE'>DAG</scene></td></tr>
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|GENE=
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Cyclomaltodextrin_glucanotransferase Cyclomaltodextrin glucanotransferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.1.19 2.4.1.19] </span></td></tr>
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}}
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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=6cgt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6cgt OCA], [https://pdbe.org/6cgt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6cgt RCSB], [https://www.ebi.ac.uk/pdbsum/6cgt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6cgt ProSAT]</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/cg/6cgt_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=6cgt 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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Bacterial cyclodextrin glycosyltransferases use starch to produce cyclic maltooligosaccharides (cyclodextrins) which are of interest in various applications. The cyclization reaction gives rise to a spectrum of ring sizes consisting of predominantly six to eight glucosyl units. Using the enzyme from Bacillus circulans strain no. 8, binding studies have been performed with several substrates and analogues. The observed binding modes differ in detail, but agree in general with data on homologous enzymes. Based on these binding studies, two mutations were designed that changed the production spectrum from the predominant product beta-cyclodextrin of the wild-type enzyme towards gamma-cyclodextrin, which is of practical interest because it is rare and can encapsulate larger nonpolar compounds.
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'''HOXA COMPLEX OF CYCLODEXTRIN GLYCOSYLTRANSFERASE MUTANT'''
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Substrate binding to a cyclodextrin glycosyltransferase and mutations increasing the gamma-cyclodextrin production.,Parsiegla G, Schmidt AK, Schulz GE Eur J Biochem. 1998 Aug 1;255(3):710-7. PMID:9738912<ref>PMID:9738912</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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<div class="pdbe-citations 6cgt" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Bacterial cyclodextrin glycosyltransferases use starch to produce cyclic maltooligosaccharides (cyclodextrins) which are of interest in various applications. The cyclization reaction gives rise to a spectrum of ring sizes consisting of predominantly six to eight glucosyl units. Using the enzyme from Bacillus circulans strain no. 8, binding studies have been performed with several substrates and analogues. The observed binding modes differ in detail, but agree in general with data on homologous enzymes. Based on these binding studies, two mutations were designed that changed the production spectrum from the predominant product beta-cyclodextrin of the wild-type enzyme towards gamma-cyclodextrin, which is of practical interest because it is rare and can encapsulate larger nonpolar compounds.
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*[[Glycosyltransferase 3D structures|Glycosyltransferase 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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6CGT is a [[Single protein]] structure of 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=6CGT OCA].
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__TOC__
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</StructureSection>
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==Reference==
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[[Category: Atcc 24]]
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Substrate binding to a cyclodextrin glycosyltransferase and mutations increasing the gamma-cyclodextrin production., Parsiegla G, Schmidt AK, Schulz GE, Eur J Biochem. 1998 Aug 1;255(3):710-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9738912 9738912]
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[[Category: Bacillus circulans]]
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[[Category: Cyclomaltodextrin glucanotransferase]]
[[Category: Cyclomaltodextrin glucanotransferase]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Parsiegla, G.]]
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[[Category: Parsiegla, G]]
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[[Category: Schulz, G E.]]
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[[Category: Schulz, G E]]
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[[Category: CA]]
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[[Category: Cyclodextrin]]
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[[Category: cyclodextrin]]
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[[Category: Glycosyltransferase]]
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[[Category: glycosyltransferase]]
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[[Category: Starch degradation]]
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[[Category: starch degradation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 19:13:15 2008''
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Current revision

HOXA COMPLEX OF CYCLODEXTRIN GLYCOSYLTRANSFERASE MUTANT

PDB ID 6cgt

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