6sgn
From Proteopedia
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<StructureSection load='6sgn' size='340' side='right'caption='[[6sgn]], [[Resolution|resolution]] 2.50Å' scene=''> | <StructureSection load='6sgn' size='340' side='right'caption='[[6sgn]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[6sgn]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SGN OCA]. For a <b>guided tour on the structure components</b> use [ | + | <table><tr><td colspan='2'>[[6sgn]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6SGN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6SGN FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.501Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=LD8:2,4-dimethoxypyrimidine'>LD8</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=6sgn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6sgn OCA], [https://pdbe.org/6sgn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6sgn RCSB], [https://www.ebi.ac.uk/pdbsum/6sgn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6sgn ProSAT]</span></td></tr> | |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/RUTA_ECOLI RUTA_ECOLI] Catalyzes the pyrimidine ring opening between N-3 and C-4 by an unusual flavin hydroperoxide-catalyzed mechanism to yield ureidoacrylate peracid. It cleaves pyrmidine rings directly by adding oxygen atoms, making a toxic ureidoacrylate peracid product which can be spontaneously reduced to ureidoacrylate. Requires the flavin reductase RutF to regenerate FMN in vivo. RutF can be substituted by Fre in vitro.<ref>PMID:16540542</ref> <ref>PMID:20400551</ref> |
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | One of the hallmark reactions catalyzed by flavin-dependent enzymes is the incorporation of an oxygen atom derived from dioxygen into organic substrates. For many decades, these flavin monooxygenases were assumed to use exclusively the flavin-C4a-(hydro)peroxide as their oxygen-transferring intermediate. We demonstrate that flavoenzymes may instead employ a flavin-N5-peroxide as a soft alpha-nucleophile for catalysis, which enables chemistry not accessible to canonical monooxygenases. This includes, for example, the redox-neutral cleavage of carbon-hetero bonds or the dehalogenation of inert environmental pollutants via atypical oxygenations. We furthermore identify a shared structural motif for dioxygen activation and N5-functionalization, suggesting a conserved pathway that may be operative in numerous characterized and uncharacterized flavoenzymes from diverse organisms. Our findings show that overlooked flavin-N5-oxygen adducts are more widespread and may facilitate versatile chemistry, thus upending the notion that flavin monooxygenases exclusively function as nature's equivalents to organic peroxides in synthetic chemistry. | ||
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| + | Aminoperoxide adducts expand the catalytic repertoire of flavin monooxygenases.,Matthews A, Saleem-Batcha R, Sanders JN, Stull F, Houk KN, Teufel R Nat Chem Biol. 2020 May;16(5):556-563. doi: 10.1038/s41589-020-0476-2. Epub 2020 , Feb 17. PMID:32066967<ref>PMID:32066967</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6sgn" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Escherichia coli K-12]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | + | [[Category: Matthews A]] | |
| - | [[Category: Matthews | + | [[Category: Saleem-Batcha R]] |
| - | [[Category: Saleem-Batcha | + | [[Category: Teufel R]] |
| - | [[Category: Teufel | + | |
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Current revision
Crystal structure of monooxygenase RutA complexed with 2,4-dimethoxypyrimidine.
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