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== | ==Crystal structure of the dihydroxyacetone kinase from C. freundii in complex with AMP-PNP and Mg2+== | ||
Dihydroxyacetone kinases are a sequence-conserved family of enzymes, which | <StructureSection load='1un9' size='340' side='right'caption='[[1un9]], [[Resolution|resolution]] 3.10Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1un9]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Citrobacter_freundii Citrobacter freundii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UN9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UN9 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.1Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2HA:DIHYDROXYACETONE'>2HA</scene>, <scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC+ACID-ADENYLATE+ESTER'>ANP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=1un9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1un9 OCA], [https://pdbe.org/1un9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1un9 RCSB], [https://www.ebi.ac.uk/pdbsum/1un9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1un9 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/DHAK_CITFR DHAK_CITFR] Catalyzes the phosphorylation of dihydroxyacetone. | |||
== Evolutionary Conservation == | |||
[[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/un/1un9_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/main_output.php?pdb_ID=1un9 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Dihydroxyacetone kinases are a sequence-conserved family of enzymes, which utilize two different phosphoryldonors, ATP in animals, plants and some bacteria, and a multiphosphoprotein of the phosphoenolpyruvate carbohydrate phosphotransferase system in bacteria. Here we report the 2.5-A crystal structure of the homodimeric Citrobacter freundii dihydroxyacetone kinase complex with an ATP analogue and dihydroxyacetone. The N-terminal domain consists of two alpha/beta-folds with a molecule of dihydroxyacetone covalently bound in hemiaminal linkage to the N epsilon 2 of His-220. The C-terminal domain consists of a regular eight-helix alpha-barrel. The eight helices form a deep pocket, which includes a tightly bound phospholipid. Only the lipid headgroup protrudes from the surface. The nucleotide is bound on the top of the barrel across from the entrance to the lipid pocket. The phosphate groups are coordinated by two Mg2+ ions to gamma-carboxyl groups of aspartyl residues. The ATP binding site does not contain positively charged or aromatic groups. Paralogues of dihydroxyacetone kinase also occur in association with transcription regulators and proteins of unknown function pointing to biological roles beyond triose metabolism. | |||
Crystal structure of the Citrobacter freundii dihydroxyacetone kinase reveals an eight-stranded alpha-helical barrel ATP-binding domain.,Siebold C, Arnold I, Garcia-Alles LF, Baumann U, Erni B J Biol Chem. 2003 Nov 28;278(48):48236-44. Epub 2003 Sep 9. PMID:12966101<ref>PMID:12966101</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1un9" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Citrobacter freundii]] | [[Category: Citrobacter freundii]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Arnold I]] | |||
[[Category: Arnold | [[Category: Baumann U]] | ||
[[Category: Baumann | [[Category: Erni B]] | ||
[[Category: Erni | [[Category: Garcia-Alles LF]] | ||
[[Category: Garcia-Alles | [[Category: Siebold C]] | ||
[[Category: Siebold | |||
Latest revision as of 16:17, 9 May 2024
Crystal structure of the dihydroxyacetone kinase from C. freundii in complex with AMP-PNP and Mg2+Crystal structure of the dihydroxyacetone kinase from C. freundii in complex with AMP-PNP and Mg2+
Structural highlights
FunctionDHAK_CITFR Catalyzes the phosphorylation of dihydroxyacetone. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedDihydroxyacetone kinases are a sequence-conserved family of enzymes, which utilize two different phosphoryldonors, ATP in animals, plants and some bacteria, and a multiphosphoprotein of the phosphoenolpyruvate carbohydrate phosphotransferase system in bacteria. Here we report the 2.5-A crystal structure of the homodimeric Citrobacter freundii dihydroxyacetone kinase complex with an ATP analogue and dihydroxyacetone. The N-terminal domain consists of two alpha/beta-folds with a molecule of dihydroxyacetone covalently bound in hemiaminal linkage to the N epsilon 2 of His-220. The C-terminal domain consists of a regular eight-helix alpha-barrel. The eight helices form a deep pocket, which includes a tightly bound phospholipid. Only the lipid headgroup protrudes from the surface. The nucleotide is bound on the top of the barrel across from the entrance to the lipid pocket. The phosphate groups are coordinated by two Mg2+ ions to gamma-carboxyl groups of aspartyl residues. The ATP binding site does not contain positively charged or aromatic groups. Paralogues of dihydroxyacetone kinase also occur in association with transcription regulators and proteins of unknown function pointing to biological roles beyond triose metabolism. Crystal structure of the Citrobacter freundii dihydroxyacetone kinase reveals an eight-stranded alpha-helical barrel ATP-binding domain.,Siebold C, Arnold I, Garcia-Alles LF, Baumann U, Erni B J Biol Chem. 2003 Nov 28;278(48):48236-44. Epub 2003 Sep 9. PMID:12966101[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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