3w77

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<StructureSection load='3w77' size='340' side='right'caption='[[3w77]], [[Resolution|resolution]] 1.66&Aring;' scene=''>
<StructureSection load='3w77' size='340' side='right'caption='[[3w77]], [[Resolution|resolution]] 1.66&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[3w77]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_sp._b29 Bacillus sp. b29]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3W77 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3W77 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[3w77]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_sp._B29 Bacillus sp. B29]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3W77 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3W77 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.66&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3w78|3w78]], [[3w79|3w79]], [[3w7a|3w7a]]</div></td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">azrA, azoR ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=391699 Bacillus sp. B29])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3w77 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3w77 OCA], [https://pdbe.org/3w77 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3w77 RCSB], [https://www.ebi.ac.uk/pdbsum/3w77 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3w77 ProSAT]</span></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=3w77 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3w77 OCA], [https://pdbe.org/3w77 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3w77 RCSB], [https://www.ebi.ac.uk/pdbsum/3w77 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3w77 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[https://www.uniprot.org/uniprot/Q0WXX2_9BACI Q0WXX2_9BACI]] Catalyzes the reductive cleavage of azo bond in aromatic azo compounds to the corresponding amines. Requires NADH, but not NADPH, as an electron donor for its activity (By similarity).[HAMAP-Rule:MF_01216][SAAS:SAAS003680_004_018232]
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[https://www.uniprot.org/uniprot/Q0WXX2_9BACI Q0WXX2_9BACI] Catalyzes the reductive cleavage of azo bond in aromatic azo compounds to the corresponding amines. Requires NADH, but not NADPH, as an electron donor for its activity (By similarity).[HAMAP-Rule:MF_01216][SAAS:SAAS003680_004_018232]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Azo dyes are major synthetic dyestuffs with one or more azo bonds and are widely used for various industrial purposes. The biodegradation of residual azo dyes via azoreductase-catalyzed cleavage is very efficient as the initial step of wastewater treatment. The structures of the complexes of azoreductases with various substrates are therefore indispensable to understand their substrate specificity and catalytic mechanism. In this study, the crystal structures of AzrA and of AzrC complexed with Cibacron Blue (CB) and the azo dyes Acid Red 88 (AR88) and Orange I (OI) were determined. As an inhibitor/analogue of NAD(P)H, CB was located on top of flavin mononucleotide (FMN), suggesting a similar binding manner as NAD(P)H for direct hydride transfer to FMN. The structures of the AzrC-AR88 and AzrC-OI complexes showed two manners of binding for substrates possessing a hydroxy group at the ortho or the para position of the azo bond, respectively, while AR88 and OI were estimated to have a similar binding affinity to AzrC from ITC experiments. Although the two substrates were bound in different orientations, the hydroxy groups were located in similar positions, resulting in an arrangement of electrophilic C atoms binding with a proton/electron-donor distance of approximately 3.5 A to N5 of FMN. Catalytic mechanisms for different substrates are proposed based on the crystal structures and on site-directed mutagenesis analysis.
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Structures of AzrA and of AzrC complexed with substrate or inhibitor: insight into substrate specificity and catalytic mechanism.,Yu J, Ogata D, Gai Z, Taguchi S, Tanaka I, Ooi T, Yao M Acta Crystallogr D Biol Crystallogr. 2014 Feb;70(Pt 2):553-64. doi:, 10.1107/S1399004713030988. Epub 2014 Jan 31. PMID:24531489<ref>PMID:24531489</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 3w77" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Bacillus sp. b29]]
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[[Category: Bacillus sp. B29]]
[[Category: Large Structures]]
[[Category: Large Structures]]
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[[Category: Ogata, D]]
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[[Category: Ogata D]]
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[[Category: Ooi, T]]
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[[Category: Ooi T]]
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[[Category: Yao, M]]
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[[Category: Yao M]]
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[[Category: Yu, J]]
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[[Category: Yu J]]
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[[Category: Azo bond cleavage]]
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[[Category: Azoreductase]]
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[[Category: Fmn-binding]]
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[[Category: Oxidoreductase]]
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Current revision

Crystal Structure of azoreductase AzrA

PDB ID 3w77

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