View source for 2d1q


==Crystal structure of the thermostable Japanese Firefly Luciferase complexed with MgATP==
<StructureSection load='2d1q' size='340' side='right'caption='[[2d1q]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2d1q]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Luciola_cruciata Luciola cruciata]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D1Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2D1Q 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]] 2.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene>, <scene name='pdbligand=CSO:S-HYDROXYCYSTEINE'>CSO</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=2d1q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d1q OCA], [https://pdbe.org/2d1q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2d1q RCSB], [https://www.ebi.ac.uk/pdbsum/2d1q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2d1q ProSAT], [https://www.topsan.org/Proteins/RSGI/2d1q TOPSAN]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/LUCI_LUCCR LUCI_LUCCR] Produces green light with a wavelength of 544 nm.
== 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/d1/2d1q_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=2d1q ConSurf].
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== Publication Abstract from PubMed ==
Fireflies communicate with each other by emitting yellow-green to yellow-orange brilliant light. The bioluminescence reaction, which uses luciferin, Mg-ATP and molecular oxygen to yield an electronically excited oxyluciferin species, is carried out by the enzyme luciferase. Visible light is emitted during relaxation of excited oxyluciferin to its ground state. The high quantum yield of the luciferin/luciferase reaction and the change in bioluminescence colour caused by subtle structural differences in luciferase have attracted much research interest. In fact, a single amino acid substitution in luciferase changes the emission colour from yellow-green to red. Although the crystal structure of luciferase from the North American firefly (Photinus pyralis) has been described, the detailed mechanism for the bioluminescence colour change is still unclear. Here we report the crystal structures of wild-type and red mutant (S286N) luciferases from the Japanese Genji-botaru (Luciola cruciata) in complex with a high-energy intermediate analogue, 5'-O-[N-(dehydroluciferyl)-sulfamoyl]adenosine (DLSA). Comparing these structures to those of the wild-type luciferase complexed with AMP plus oxyluciferin (products) reveals a significant conformational change in the wild-type enzyme but not in the red mutant. This conformational change involves movement of the hydrophobic side chain of Ile 288 towards the benzothiazole ring of DLSA. Our results indicate that the degree of molecular rigidity of the excited state of oxyluciferin, which is controlled by a transient movement of Ile 288, determines the colour of bioluminescence during the emission reaction.

Structural basis for the spectral difference in luciferase bioluminescence.,Nakatsu T, Ichiyama S, Hiratake J, Saldanha A, Kobashi N, Sakata K, Kato H Nature. 2006 Mar 16;440(7082):372-6. PMID:16541080<ref>PMID:16541080</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2d1q" style="background-color:#fffaf0;"></div>

==See Also==
*[[Luciferase 3D structures|Luciferase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Luciola cruciata]]
[[Category: Hiratake J]]
[[Category: Ichiyama S]]
[[Category: Kato H]]
[[Category: Kobashi N]]
[[Category: Nakatsu T]]
[[Category: Sakata K]]
[[Category: Saldanha A]]