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<StructureSection load='1qgd' size='340' side='right'caption='[[1qgd]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
<StructureSection load='1qgd' size='340' side='right'caption='[[1qgd]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1qgd]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QGD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1QGD FirstGlance]. <br>
<table><tr><td colspan='2'>[[1qgd]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QGD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1QGD FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TPP:THIAMINE+DIPHOSPHATE'>TPP</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Transketolase Transketolase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.2.1.1 2.2.1.1] </span></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=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TPP:THIAMINE+DIPHOSPHATE'>TPP</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1qgd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qgd OCA], [http://pdbe.org/1qgd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1qgd RCSB], [http://www.ebi.ac.uk/pdbsum/1qgd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1qgd ProSAT]</span></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=1qgd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1qgd OCA], [https://pdbe.org/1qgd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1qgd RCSB], [https://www.ebi.ac.uk/pdbsum/1qgd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1qgd ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/TKT1_ECOLI TKT1_ECOLI]] Catalyzes the reversible transfer of a two-carbon ketol group from sedoheptulose-7-phosphate to glyceraldehyde-3-phosphate, producing xylulose-5-phosphate and ribose-5-phosphate. Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate.<ref>PMID:17914867</ref>
[https://www.uniprot.org/uniprot/TKT1_ECOLI TKT1_ECOLI] Catalyzes the reversible transfer of a two-carbon ketol group from sedoheptulose-7-phosphate to glyceraldehyde-3-phosphate, producing xylulose-5-phosphate and ribose-5-phosphate. Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate.<ref>PMID:17914867</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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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=1qgd ConSurf].
</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=1qgd ConSurf].
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<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The Escherichia coli enzyme transketolase, a dimeric protein of 2 x 70 kDa (662 amino acids) has been prepared from an overexpression system in E. coli. The purified enzyme has been crystallized from PIPES buffer pH 6.4 and ammonium sulfate. The crystals which grow as large plates diffract to greater than 1.9 A, resolution and are of the space group P2(1)2(1)2(1) with unit-cell dimensions of a = 74.6, b = 125.6 and c = 151.0 A, (Z = 8 with one transketolase dimer in the asymmetric unit). The structure has been solved by molecular replacement using the yeast transketolase enzyme structure as a search model. The enzyme is being used for large-scale biotransformations using various aldehydes and hydroxypyruvate as substrates.
Crystallization and preliminary X-ray crystallographic data with Escherichia coli transketolase.,Littlechild J, Turner N, Hobbs G, Lilly M, Rawas A, Watson H Acta Crystallogr D Biol Crystallogr. 1995 Nov 1;51(Pt 6):1074-6. doi:, 10.1107/S0907444995005415. PMID:15299777<ref>PMID:15299777</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1qgd" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Transketolase|Transketolase]]
*[[Transketolase 3D structures|Transketolase 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacillus coli migula 1895]]
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Transketolase]]
[[Category: Isupov MN]]
[[Category: Isupov, M N]]
[[Category: Littlechild JA]]
[[Category: Littlechild, J A]]
[[Category: D-sedoheptulose 7-phosphate d-glyceraldehyde 3- phosphate glycolaldehyde transferase]]
[[Category: Thiamine pyrophosphate]]
[[Category: Transferase]]

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