7pgz

<StructureSection load='7pgz' size='340' side='right'caption='[[7pgz]], [[Resolution|resolution]] 0.90&Aring;' scene=''>

<table><tr><td colspan='2'>[[7pgz]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7PGZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7PGZ FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</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=7pgz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7pgz OCA], [https://pdbe.org/7pgz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7pgz RCSB], [https://www.ebi.ac.uk/pdbsum/7pgz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7pgz ProSAT]</span></td></tr>

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== Publication Abstract from PubMed ==

In nature as in biotechnology, light-oxygen-voltage photoreceptors perceive blue light to elicit spatiotemporally defined cellular responses. Photon absorption drives thioadduct formation between a conserved cysteine and the flavin chromophore. An equally conserved, proximal glutamine processes the resultant flavin protonation into downstream hydrogen-bond rearrangements. Here, we report that this glutamine, long deemed essential, is generally dispensable. In its absence, several light-oxygen-voltage receptors invariably retained productive, if often attenuated, signaling responses. Structures of a light-oxygen-voltage paradigm at around 1 A resolution revealed highly similar light-induced conformational changes, irrespective of whether the glutamine is present. Naturally occurring, glutamine-deficient light-oxygen-voltage receptors likely serve as bona fide photoreceptors, as we showcase for a diguanylate cyclase. We propose that without the glutamine, water molecules transiently approach the chromophore and thus propagate flavin protonation downstream. Signaling without glutamine appears intrinsic to light-oxygen-voltage receptors, which pertains to biotechnological applications and suggests evolutionary descendance from redox-active flavoproteins.

Signal transduction in light-oxygen-voltage receptors lacking the active-site glutamine.,Dietler J, Gelfert R, Kaiser J, Borin V, Renzl C, Pilsl S, Ranzani AT, Garcia de Fuentes A, Gleichmann T, Diensthuber RP, Weyand M, Mayer G, Schapiro I, Moglich A Nat Commun. 2022 May 12;13(1):2618. doi: 10.1038/s41467-022-30252-4. PMID:35552382<ref>PMID:35552382</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 7pgz" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Gelfert, R]]

[[Category: Moeglich, A]]

[[Category: Weyand, M]]

[[Category: Signaling protein]]