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[[Image:2jfb.jpg|left|200px]]<br /><applet load="2jfb" size="350" color="white" frame="true" align="right" spinBox="true"
caption="2jfb, resolution 2.50&Aring;" />
'''3D STRUCTURE OF LUMAZINE SYNTHASE FROM CANDIDA ALBICANS'''<br />


==Overview==
==3D Structure of Lumazine Synthase from Candida albicans==
Lumazine synthase is an enzyme involved in riboflavin biosynthesis in many, plants and microorganisms, including numerous human pathogens. The fact, that the enzymes of the riboflavin biosynthesis pathway are not present in, the human or animal host makes them potential targets for anti-infective, agents. The crystal structure of lumazine synthase from Candida albicans, was solved by molecular replacement and refined at 2.5-Angstrom, resolution. The results of crystallographic investigations and, sedimentation equilibrium experiments clearly indicated the presence of, pentameric assemblies of the enzyme either in crystals or in solution., Isothermal titration calorimetry measurements of the binding reactions of, four different inhibitors revealed high affinity for all four compounds, with binding constants in the micromolar range. Structural comparison with, previously determined structures of the enzyme.ligand complexes of other, orthologue allowed modeling of the binding of four different inhibitors, into the active site of lumazine synthase from Candida albicans.
<StructureSection load='2jfb' size='340' side='right'caption='[[2jfb]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2jfb]] is a 15 chain structure with sequence from [https://en.wikipedia.org/wiki/Candida_albicans Candida albicans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JFB OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2JFB 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]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=2jfb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jfb OCA], [https://pdbe.org/2jfb PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2jfb RCSB], [https://www.ebi.ac.uk/pdbsum/2jfb PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2jfb ProSAT]</span></td></tr>
</table>
== 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/jf/2jfb_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=2jfb ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Lumazine synthase is an enzyme involved in riboflavin biosynthesis in many plants and microorganisms, including numerous human pathogens. The fact that the enzymes of the riboflavin biosynthesis pathway are not present in the human or animal host makes them potential targets for anti-infective agents. The crystal structure of lumazine synthase from Candida albicans was solved by molecular replacement and refined at 2.5-Angstrom resolution. The results of crystallographic investigations and sedimentation equilibrium experiments clearly indicated the presence of pentameric assemblies of the enzyme either in crystals or in solution. Isothermal titration calorimetry measurements of the binding reactions of four different inhibitors revealed high affinity for all four compounds with binding constants in the micromolar range. Structural comparison with previously determined structures of the enzyme.ligand complexes of other orthologue allowed modeling of the binding of four different inhibitors into the active site of lumazine synthase from Candida albicans.


==About this Structure==
Lumazine synthase from Candida albicans as an anti-fungal target enzyme: structural and biochemical basis for drug design.,Morgunova E, Saller S, Haase I, Cushman M, Bacher A, Fischer M, Ladenstein R J Biol Chem. 2007 Jun 8;282(23):17231-41. Epub 2007 Apr 18. PMID:17446177<ref>PMID:17446177</ref>
2JFB is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Candida_albicans Candida albicans] with <scene name='pdbligand=PO4:'>PO4</scene> and <scene name='pdbligand=MPD:'>MPD</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Riboflavin_synthase Riboflavin synthase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.5.1.9 2.5.1.9] Known structural/functional Site: <scene name='pdbsite=AC1:Mpd+Binding+Site+For+Chain+K'>AC1</scene>. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JFB OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
Lumazine synthase from Candida albicans as an anti-fungal target enzyme: structural and biochemical basis for drug design., Morgunova E, Saller S, Haase I, Cushman M, Bacher A, Fischer M, Ladenstein R, J Biol Chem. 2007 Jun 8;282(23):17231-41. Epub 2007 Apr 18. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=17446177 17446177]
</div>
<div class="pdbe-citations 2jfb" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Candida albicans]]
[[Category: Candida albicans]]
[[Category: Riboflavin synthase]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Bacher A]]
[[Category: Bacher, A.]]
[[Category: Cushman M]]
[[Category: Cushman, M.]]
[[Category: Fischer M]]
[[Category: Fischer, M.]]
[[Category: Ladenstein R]]
[[Category: Ladenstein, R.]]
[[Category: Morgunova E]]
[[Category: Morgunova, E.]]
[[Category: MPD]]
[[Category: PO4]]
[[Category: candida albicans]]
[[Category: lumazine synthase]]
[[Category: riboflavin biosynthesis]]
[[Category: transferase]]
 
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