1m9r: Difference between revisions

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 <StructureSection load='1m9r' size='340' side='right'caption='[[1m9r]], [[Resolution|resolution]] 2.56&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1m9r]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M9R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M9R FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1m9r]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M9R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M9R FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=INE:3-BROMO-7-NITROINDAZOLE'>INE</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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]] 2.56&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1m8d|1m8d]], [[1m8e|1m8e]], [[1m8h|1m8h]], [[1m8i|1m8i]], [[1m9j|1m9j]], [[1m9k|1m9k]], [[1m9m|1m9m]], [[1m9q|1m9q]], [[1m9t|1m9t]], [[1nod|1nod]], [[3nos|3nos]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=INE:3-BROMO-7-NITROINDAZOLE'>INE</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Nitric-oxide_synthase_(NADPH_dependent) Nitric-oxide synthase (NADPH dependent)], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.13.39 1.14.13.39] </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=1m9r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m9r OCA], [https://pdbe.org/1m9r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m9r RCSB], [https://www.ebi.ac.uk/pdbsum/1m9r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m9r ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/NOS3_HUMAN NOS3_HUMAN]] Produces nitric oxide (NO) which is implicated in vascular smooth muscle relaxation through a cGMP-mediated signal transduction pathway. NO mediates vascular endothelial growth factor (VEGF)-induced angiogenesis in coronary vessels and promotes blood clotting through the activation of platelets.<ref>PMID:17264164</ref>   Isoform eNOS13C: Lacks eNOS activity, dominant-negative form that may down-regulate eNOS activity by forming heterodimers with isoform 1.<ref>PMID:17264164</ref>
+[https://www.uniprot.org/uniprot/NOS3_HUMAN NOS3_HUMAN] Produces nitric oxide (NO) which is implicated in vascular smooth muscle relaxation through a cGMP-mediated signal transduction pathway. NO mediates vascular endothelial growth factor (VEGF)-induced angiogenesis in coronary vessels and promotes blood clotting through the activation of platelets.<ref>PMID:17264164</ref>   Isoform eNOS13C: Lacks eNOS activity, dominant-negative form that may down-regulate eNOS activity by forming heterodimers with isoform 1.<ref>PMID:17264164</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 21: / Line 20: @@
 </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/main_output.php?pdb_ID=1m9r ConSurf].
 <div style="clear:both"></div>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-Nitric oxide is a key signaling molecule in many biological processes, making regulation of nitric oxide levels highly desirable for human medicine and for advancing our understanding of basic physiology. Designing inhibitors to specifically target one of the three nitric oxide synthase (NOS) isozymes that form nitric oxide from the L-Arg substrate poses a significant challenge due to the overwhelmingly conserved active sites. We report here 10 new X-ray crystallographic structures of inducible and endothelial NOS oxygenase domains cocrystallized with chlorzoxazone and four nitroindazoles: 5-nitroindazole, 6-nitroindazole, 7-nitroindazole, and 3-bromo-7-nitroindazole. Each of these bicyclic aromatic inhibitors has only one hydrogen bond donor and therefore cannot form the bidentate hydrogen bonds that the L-Arg substrate makes with Glu371. Instead, all of these inhibitors induce a conformational change in Glu371, creating an active site with altered molecular recognition properties. The cost of this conformational change is approximately 1-2 kcal, based on our measured constants for inhibitor binding to the wild-type and E371A mutant proteins. These inhibitors derive affinity by pi-stacking above the heme and replacing both intramolecular (Glu371-Met368) and intermolecular (substrate-Trp366) hydrogen bonds to the beta-sheet architecture underlying the active site. When bound to NOS, high-affinity inhibitors in this class are planar, whereas weaker inhibitors are nonplanar. Isozyme differences were observed in the pterin cofactor site, the heme propionate, and inhibitor positions. Computational docking predictions match the crystallographic results, including the Glu371 conformational change and inhibitor-binding orientations, and support a combined crystallographic and computational approach to isozyme-specific NOS inhibitor analysis and design.
-Conformational changes in nitric oxide synthases induced by chlorzoxazone and nitroindazoles: crystallographic and computational analyses of inhibitor potency.,Rosenfeld RJ, Garcin ED, Panda K, Andersson G, Aberg A, Wallace AV, Morris GM, Olson AJ, Stuehr DJ, Tainer JA, Getzoff ED Biochemistry. 2002 Nov 26;41(47):13915-25. PMID:12437348<ref>PMID:12437348</ref>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 1m9r" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 37: / Line 27: @@
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Aberg, A]]
+[[Category: Aberg A]]
-[[Category: Andersson, G]]
+[[Category: Andersson G]]
-[[Category: Garcin, E D]]
+[[Category: Garcin ED]]
-[[Category: Getzoff, E D]]
+[[Category: Getzoff ED]]
-[[Category: Panda, K]]
+[[Category: Panda K]]
-[[Category: Rosenfeld, R J]]
+[[Category: Rosenfeld RJ]]
-[[Category: Stuehr, D J]]
+[[Category: Stuehr DJ]]
-[[Category: Tainer, J A]]
+[[Category: Tainer JA]]
-[[Category: Wallace, A V]]
+[[Category: Wallace AV]]
-[[Category: Oxidoreductase]]