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1ek6

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{{STRUCTURE_1ek6| PDB=1ek6 | SCENE= }}
 
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===STRUCTURE OF HUMAN UDP-GALACTOSE 4-EPIMERASE COMPLEXED WITH NADH AND UDP-GLUCOSE===
 
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{{ABSTRACT_PUBMED_10801319}}
 
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==Disease==
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==STRUCTURE OF HUMAN UDP-GALACTOSE 4-EPIMERASE COMPLEXED WITH NADH AND UDP-GLUCOSE==
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[[http://www.uniprot.org/uniprot/GALE_HUMAN GALE_HUMAN]] Defects in GALE are the cause of epimerase-deficiency galactosemia (EDG) [MIM:[http://omim.org/entry/230350 230350]]; also known as galactosemia type 3. Clinical features include early-onset cataracts, liver damage, deafness and mental retardation. There are two clinically distinct forms of EDG. (1) A benign, or 'peripheral' form with no detectable GALE activity in red blood cells and characterized by mild symptoms. Some patients may suffer no symptoms beyond raised levels of galactose-1-phosphate in the blood. (2) A much rarer 'generalized' form with undetectable levels of GALE activity in all tissues and resulting in severe features such as restricted growth and mental development.<ref>PMID:16302980</ref><ref>PMID:9538513</ref><ref>PMID:11279193</ref><ref>PMID:9326324</ref><ref>PMID:9973283</ref><ref>PMID:11903335</ref><ref>PMID:16301867</ref><ref>PMID:15639193</ref>
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<StructureSection load='1ek6' size='340' side='right'caption='[[1ek6]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1ek6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EK6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EK6 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]] 1.5&#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=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NAI:1,4-DIHYDRONICOTINAMIDE+ADENINE+DINUCLEOTIDE'>NAI</scene>, <scene name='pdbligand=TMA:TETRAMETHYLAMMONIUM+ION'>TMA</scene>, <scene name='pdbligand=UPG:URIDINE-5-DIPHOSPHATE-GLUCOSE'>UPG</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=1ek6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ek6 OCA], [https://pdbe.org/1ek6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ek6 RCSB], [https://www.ebi.ac.uk/pdbsum/1ek6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ek6 ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/GALE_HUMAN GALE_HUMAN] Defects in GALE are the cause of epimerase-deficiency galactosemia (EDG) [MIM:[https://omim.org/entry/230350 230350]; also known as galactosemia type 3. Clinical features include early-onset cataracts, liver damage, deafness and mental retardation. There are two clinically distinct forms of EDG. (1) A benign, or 'peripheral' form with no detectable GALE activity in red blood cells and characterized by mild symptoms. Some patients may suffer no symptoms beyond raised levels of galactose-1-phosphate in the blood. (2) A much rarer 'generalized' form with undetectable levels of GALE activity in all tissues and resulting in severe features such as restricted growth and mental development.<ref>PMID:16302980</ref> <ref>PMID:9538513</ref> <ref>PMID:11279193</ref> <ref>PMID:9326324</ref> <ref>PMID:9973283</ref> <ref>PMID:11903335</ref> <ref>PMID:16301867</ref> <ref>PMID:15639193</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/GALE_HUMAN GALE_HUMAN] Catalyzes two distinct but analogous reactions: the epimerization of UDP-glucose to UDP-galactose and the epimerization of UDP-N-acetylglucosamine to UDP-N-acetylgalactosamine.
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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/ek/1ek6_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=1ek6 ConSurf].
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<div style="clear:both"></div>
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==Function==
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==See Also==
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[[http://www.uniprot.org/uniprot/GALE_HUMAN GALE_HUMAN]] Catalyzes two distinct but analogous reactions: the epimerization of UDP-glucose to UDP-galactose and the epimerization of UDP-N-acetylglucosamine to UDP-N-acetylgalactosamine.
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*[[UDP-galactose 4-epimerase|UDP-galactose 4-epimerase]]
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== References ==
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==About this Structure==
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<references/>
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[[1ek6]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EK6 OCA].
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__TOC__
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</StructureSection>
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==Reference==
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<ref group="xtra">PMID:010801319</ref><references group="xtra"/><references/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: UDP-glucose 4-epimerase]]
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[[Category: Large Structures]]
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[[Category: Fridovich-Keil, J L.]]
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[[Category: Fridovich-Keil JL]]
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[[Category: Holden, H M.]]
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[[Category: Holden HM]]
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[[Category: Thoden, J B.]]
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[[Category: Thoden JB]]
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[[Category: Wohlers, T M.]]
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[[Category: Wohlers TM]]
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[[Category: Epimerase]]
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[[Category: Galactosemia]]
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[[Category: Isomerase]]
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[[Category: Short-chain dehydrogenase]]
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Current revision

STRUCTURE OF HUMAN UDP-GALACTOSE 4-EPIMERASE COMPLEXED WITH NADH AND UDP-GLUCOSE

PDB ID 1ek6

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