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| | <StructureSection load='5tdt' size='340' side='right'caption='[[5tdt]], [[Resolution|resolution]] 1.82Å' scene=''> | | <StructureSection load='5tdt' size='340' side='right'caption='[[5tdt]], [[Resolution|resolution]] 1.82Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5tdt]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_25411 Atcc 25411]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TDT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5TDT FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5tdt]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_mendocina Pseudomonas mendocina]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TDT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TDT FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=MBN:TOLUENE'>MBN</scene>, <scene name='pdbligand=PER:PEROXIDE+ION'>PER</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.818Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5tds|5tds]], [[5tdu|5tdu]], [[5tdv|5tdv]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=MBN:TOLUENE'>MBN</scene>, <scene name='pdbligand=PER:PEROXIDE+ION'>PER</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">tmoA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300 ATCC 25411]), tmoE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300 ATCC 25411]), tmoB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300 ATCC 25411]), tmoD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300 ATCC 25411])</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=5tdt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tdt OCA], [https://pdbe.org/5tdt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5tdt RCSB], [https://www.ebi.ac.uk/pdbsum/5tdt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5tdt ProSAT]</span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5tdt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tdt OCA], [http://pdbe.org/5tdt PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5tdt RCSB], [http://www.ebi.ac.uk/pdbsum/5tdt PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5tdt ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/TMOD_PSEME TMOD_PSEME]] Effector protein subunit of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol. Required for optimal efficiency and specificity of the holoenzyme.<ref>PMID:11297417</ref> <ref>PMID:15882052</ref> <ref>PMID:19033467</ref> [[http://www.uniprot.org/uniprot/TMOA_PSEME TMOA_PSEME]] Hydroxylase subunit of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol.<ref>PMID:19290655</ref> <ref>PMID:19705873</ref> [[http://www.uniprot.org/uniprot/TMOB_PSEME TMOB_PSEME]] Subunit T4moB of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol.<ref>PMID:19290655</ref> <ref>PMID:19705873</ref> [[http://www.uniprot.org/uniprot/TMOE_PSEME TMOE_PSEME]] Subunit of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol. | + | [https://www.uniprot.org/uniprot/TMOA_PSEME TMOA_PSEME] Hydroxylase subunit of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol.<ref>PMID:19290655</ref> <ref>PMID:19705873</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Atcc 25411]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Acheson, J F]] | + | [[Category: Pseudomonas mendocina]] |
| - | [[Category: Fox, B G]] | + | [[Category: Acheson JF]] |
| - | [[Category: Diiron]] | + | [[Category: Fox BG]] |
| - | [[Category: Intermediate]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| Structural highlights
Function
TMOA_PSEME Hydroxylase subunit of the multicomponent enzyme toluene-4-monooxygenase that hydroxylates toluene to form p-cresol.[1] [2]
Publication Abstract from PubMed
Electrophilic aromatic substitution is one of the most important and recognizable classes of organic chemical transformation. Enzymes create the strong electrophiles that are needed for these highly energetic reactions by using O2, electrons, and metals or other cofactors. Although the nature of the oxidants that carry out electrophilic aromatic substitution has been deduced from many approaches, it has been difficult to determine their structures. Here we show the structure of a diiron hydroxylase intermediate formed during a reaction with toluene. Density functional theory geometry optimizations of an active site model reveal that the intermediate is an arylperoxo Fe2+/Fe3+ species with delocalized aryl radical character. The structure suggests that a carboxylate ligand of the diiron centre may trigger homolytic cleavage of the O-O bond by transferring a proton from a metal-bound water. Our work provides the spatial and electronic constraints needed to propose a comprehensive mechanism for diiron enzyme arene hydroxylation that accounts for many prior experimental results.
In-crystal reaction cycle of a toluene-bound diiron hydroxylase.,Acheson JF, Bailey LJ, Brunold TC, Fox BG Nature. 2017 Mar 27. doi: 10.1038/nature21681. PMID:28346937[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Elsen NL, Bailey LJ, Hauser AD, Fox BG. Role for threonine 201 in the catalytic cycle of the soluble diiron hydroxylase toluene 4-monooxygenase. Biochemistry. 2009 May 12;48(18):3838-46. PMID:19290655 doi:10.1021/bi900144a
- ↑ Bailey LJ, Fox BG. Crystallographic and catalytic studies of the peroxide-shunt reaction in a diiron hydroxylase. Biochemistry. 2009 Sep 29;48(38):8932-9. PMID:19705873 doi:10.1021/bi901150a
- ↑ Acheson JF, Bailey LJ, Brunold TC, Fox BG. In-crystal reaction cycle of a toluene-bound diiron hydroxylase. Nature. 2017 Mar 27. doi: 10.1038/nature21681. PMID:28346937 doi:http://dx.doi.org/10.1038/nature21681
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