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{{STRUCTURE_2hqq|  PDB=2hqq  |  SCENE=  }}
==Crystal structure of human ketohexokinase complexed to different sugar molecules==
===Crystal structure of human ketohexokinase complexed to different sugar molecules===
<StructureSection load='2hqq' size='340' side='right' caption='[[2hqq]], [[Resolution|resolution]] 1.86&Aring;' scene=''>
{{ABSTRACT_PUBMED_19237742}}
== Structural highlights ==
<table><tr><td colspan='2'>[[2hqq]] is a 1 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=2HQQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2HQQ FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">KHK ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ketohexokinase Ketohexokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.3 2.7.1.3] </span></td></tr>
<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=2hqq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hqq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2hqq RCSB], [http://www.ebi.ac.uk/pdbsum/2hqq PDBsum]</span></td></tr>
<table>
== Disease ==
[[http://www.uniprot.org/uniprot/KHK_HUMAN KHK_HUMAN]] Defects in KHK are the cause of fructosuria (FRUCT) [MIM:[http://omim.org/entry/229800 229800]]. Benign defect of intermediary metabolism.<ref>PMID:19237742</ref> <ref>PMID:7833921</ref> 
== Function ==


==Disease==
== Evolutionary Conservation ==
[[http://www.uniprot.org/uniprot/KHK_HUMAN KHK_HUMAN]] Defects in KHK are the cause of fructosuria (FRUCT) [MIM:[http://omim.org/entry/229800 229800]]. Benign defect of intermediary metabolism.<ref>PMID:19237742</ref><ref>PMID:7833921</ref>  
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hq/2hqq_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
A molecular understanding of the unique aspects of dietary fructose metabolism may be the key to understanding and controlling the current epidemic of fructose-related obesity, diabetes and related adverse metabolic states in Western populations. Fructose catabolism is initiated by its phosphorylation to fructose 1-phosphate, which is performed by ketohexokinase (KHK). Here, the crystal structures of the two alternatively spliced isoforms of human ketohexokinase, hepatic KHK-C and the peripheral isoform KHK-A, and of the ternary complex of KHK-A with the substrate fructose and AMP-PNP are reported. The structure of the KHK-A ternary complex revealed an active site with both the substrate fructose and the ATP analogue in positions ready for phosphorylation following a reaction mechanism similar to that of the pfkB family of carbohydrate kinases. Hepatic KHK deficiency causes the benign disorder essential fructosuria. The effects of the disease-causing mutations (Gly40Arg and Ala43Thr) have been modelled in the context of the KHK structure.


==About this Structure==
Structures of alternatively spliced isoforms of human ketohexokinase.,Trinh CH, Asipu A, Bonthron DT, Phillips SE Acta Crystallogr D Biol Crystallogr. 2009 Mar;65(Pt 3):201-11. Epub 2009, Feb 20. PMID:19237742<ref>PMID:19237742</ref>
[[2hqq]] is a 1 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=2HQQ OCA].
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


==See Also==
==See Also==
*[[Ketohexokinase|Ketohexokinase]]
*[[Ketohexokinase|Ketohexokinase]]
 
== References ==
==Reference==
<references/>
<ref group="xtra">PMID:019237742</ref><references group="xtra"/><references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Ketohexokinase]]
[[Category: Ketohexokinase]]
Retrieved from "https://proteopedia.org/2hqq"