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3pxw
From Proteopedia
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| - | [[ | + | ==Crystal Structure of Ferrous NO Adduct of MauG in Complex with Pre-Methylamine Dehydrogenase== |
| + | <StructureSection load='3pxw' size='340' side='right' caption='[[3pxw]], [[Resolution|resolution]] 2.11Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3pxw]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Paracoccus_denitrificans Paracoccus denitrificans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3PXW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3PXW FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=HEC:HEME+C'>HEC</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NO:NITRIC+OXIDE'>NO</scene>, <scene name='pdbligand=PG6:1-(2-METHOXY-ETHOXY)-2-{2-[2-(2-METHOXY-ETHOXY]-ETHOXY}-ETHANE'>PG6</scene>, <scene name='pdbligand=PGE:TRIETHYLENE+GLYCOL'>PGE</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=0AF:7-HYDROXY-L-TRYPTOPHAN'>0AF</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3l4m|3l4m]], [[3l4o|3l4o]], [[3orv|3orv]], [[3pxs|3pxs]], [[3pxt|3pxt]]</td></tr> | ||
| + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Amine_dehydrogenase Amine dehydrogenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.99.3 1.4.99.3] </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=3pxw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3pxw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3pxw RCSB], [http://www.ebi.ac.uk/pdbsum/3pxw PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | MauG is a diheme enzyme responsible for the post-translational formation of the catalytic tryptophan tryptophylquinone (TTQ) cofactor in methylamine dehydrogenase (MADH). MauG can utilize hydrogen peroxide, or molecular oxygen and reducing equivalents, to complete this reaction via a catalytic bis-Fe(IV) intermediate. Crystal structures of diferrous, Fe(II)-CO, and Fe(II)-NO forms of MauG in complex with its preMADH substrate have been determined and compared to one another as well as to the structure of the resting diferric MauG-preMADH complex. CO and NO each bind exclusively to the 5-coordinate high-spin heme with no change in ligation of the 6-coordinate low-spin heme. These structures reveal likely roles for amino acid residues in the distal pocket of the high-spin heme in oxygen binding and activation. Glu113 is implicated in the protonation of heme-bound diatomic oxygen intermediates in promoting cleavage of the O-O bond. Pro107 is shown to change conformation on the binding of each ligand and may play a steric role in oxygen activation by positioning the distal oxygen near Glu113. Gln103 is in a position to provide a hydrogen bond to the Fe(IV) horizontal lineO moiety that may account for the unusual stability of this species in MauG. | ||
| - | + | Crystal Structures of CO and NO Adducts of MauG in Complex with Pre-Methylamine Dehydrogenase: Implications for the Mechanism of Dioxygen Activation.,Yukl ET, Goblirsch BR, Davidson VL, Wilmot CM Biochemistry. 2011 Mar 16. PMID:21355604<ref>PMID:21355604</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
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==See Also== | ==See Also== | ||
*[[Methylamine dehydrogenase|Methylamine dehydrogenase]] | *[[Methylamine dehydrogenase|Methylamine dehydrogenase]] | ||
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| + | </StructureSection> | ||
[[Category: Amine dehydrogenase]] | [[Category: Amine dehydrogenase]] | ||
[[Category: Paracoccus denitrificans]] | [[Category: Paracoccus denitrificans]] | ||
[[Category: Goblirsch, B R]] | [[Category: Goblirsch, B R]] | ||
[[Category: Wilmot, C M]] | [[Category: Wilmot, C M]] | ||
| - | [[Category: Yukl, E T | + | [[Category: Yukl, E T]] |
[[Category: Electron transport]] | [[Category: Electron transport]] | ||
[[Category: Oxidoreductase]] | [[Category: Oxidoreductase]] | ||
[[Category: Oxidoreductase-electron transport complex]] | [[Category: Oxidoreductase-electron transport complex]] | ||
[[Category: Periplasmic space]] | [[Category: Periplasmic space]] | ||
Revision as of 12:35, 9 December 2014
Crystal Structure of Ferrous NO Adduct of MauG in Complex with Pre-Methylamine Dehydrogenase
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