1maf: Difference between revisions

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-[[Image:1maf.png|left|200px]]
+==The Active Site Structure of Methylamine Dehydrogenase: Hydrazines Identify C6 as the Reactive Site of the Tryptophan Derived Quinone Cofactor==
+<StructureSection load='1maf' size='340' side='right' caption='[[1maf]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1maf]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Paracoccus_versutus Paracoccus versutus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MAF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1MAF FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HDZ:NITROGEN+MOLECULE'>HDZ</scene><br>
+<tr><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><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Methylamine_dehydrogenase_(amicyanin) Methylamine dehydrogenase (amicyanin)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.4.9.1 1.4.9.1] </span></td></tr>
+<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1maf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1maf OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1maf RCSB], [http://www.ebi.ac.uk/pdbsum/1maf PDBsum]</span></td></tr>
+<table>
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ma/1maf_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+To identify the reactive part of the orthoquinone function of the tryptophan-derived cofactor found in methylamine dehydrogenase (MADH), we have determined the crystal structures of MADH from Thiobacillus versutus inhibited by methylhydrazine and (2,2,2-trifluoroethyl)hydrazine. Extra electron density attached to C6 of the tryptophyl tryptophanquinone cofactor shows that this atom and not C7 is the reactive part of the ortho-quinone moiety. The density retained after hydrazine inhibition is much less extensive than expected, however, suggesting that partial breakdown of the inhibitors after reaction with the cofactor may take place. A detailed description is presented of the cofactor environment in an improved model of MADH which now includes information from the recently determined gene sequence of the cofactor-containing subunit [Ubbink, M., van Kleef, M.A.G., Kleinjan, D., Hoitink, C.W.G., Huitema, F., Beintema, J.J., Duine, J.A., &amp; Canters, G.W. (1991) Eur. J. Biochem. 202, 1003-1012]. We hypothesize that Asp76 is responsible for proton abstraction from the alpha-carbon of the substrate during catalysis.
-{{STRUCTURE_1maf|  PDB=1maf  |  SCENE=  }}
+Active site structure of methylamine dehydrogenase: hydrazines identify C6 as the reactive site of the tryptophan-derived quinone cofactor.,Huizinga EG, van Zanten BA, Duine JA, Jongejan JA, Huitema F, Wilson KS, Hol WG Biochemistry. 1992 Oct 13;31(40):9789-95. PMID:1390754<ref>PMID:1390754</ref>
-===The Active Site Structure of Methylamine Dehydrogenase: Hydrazines Identify C6 as the Reactive Site of the Tryptophan Derived Quinone Cofactor===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_1390754}}
-==About this Structure==
-[[1maf]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Paracoccus_versutus Paracoccus versutus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MAF OCA].
 ==See Also==
 *[[Methylamine dehydrogenase|Methylamine dehydrogenase]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:001390754</ref><references group="xtra"/>
+__TOC__
-[[Category: Amine dehydrogenase]]
+</StructureSection>
 [[Category: Paracoccus versutus]]
 [[Category: Hol, W G.J.]]
 [[Category: Huizinga, E G.]]
 [[Category: Vellieux, F M.D.]]