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[[ | ==Structure of rat nitric oxide synthase heme domain in complex with 6-(((3R,4R)-4-(4-(3-chloro-5-fluorophenoxy)butoxy)pyrrolidin-3-yl)methyl)-4-methylpyridin-2-amine== | ||
<StructureSection load='3uft' size='340' side='right' caption='[[3uft]], [[Resolution|resolution]] 2.08Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3uft]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UFT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3UFT 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=H4B:5,6,7,8-TETRAHYDROBIOPTERIN'>H4B</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=HW7:6-({(3R,4R)-4-[4-(3-CHLORO-5-FLUOROPHENOXY)BUTOXY]PYRROLIDIN-3-YL}METHYL)-4-METHYLPYRIDIN-2-AMINE'>HW7</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ufo|3ufo]], [[3ufp|3ufp]], [[3ufq|3ufq]], [[3ufr|3ufr]], [[3ufs|3ufs]], [[3ufu|3ufu]], [[3ufv|3ufv]], [[3ufw|3ufw]]</td></tr> | |||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Nos1, Bnos ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Rattus norvegicus])</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Nitric-oxide_synthase Nitric-oxide synthase], with EC number [http://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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3uft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3uft OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3uft RCSB], [http://www.ebi.ac.uk/pdbsum/3uft PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The reduction of pathophysiologic levels of nitric oxide through inhibition of neuronal nitric oxide synthase (nNOS) has the potential to be therapeutically beneficial in various neurodegenerative diseases. We have developed a series of pyrrolidine-based nNOS inhibitors that exhibit excellent potencies and isoform selectivities (J. Am. Chem. Soc. 2010, 132, 5437). However, there are still important challenges, such as how to decrease the multiple positive charges derived from basic amino groups, which contribute to poor bioavailability, without losing potency and/or selectivity. Here we present an interdisciplinary study combining molecular docking, crystallography, molecular dynamics simulations, synthesis, and enzymology to explore potential pharmacophoric features of nNOS inhibitors and to design potent and selective monocationic nNOS inhibitors. The simulation results indicate that different hydrogen bond patterns, electrostatic interactions, hydrophobic interactions, and a water molecule bridge are key factors for stabilizing ligands and controlling ligand orientation. We find that a heteroatom in the aromatic head or linker chain of the ligand provides additional stability and blocks the substrate binding pocket. Finally, the computational insights are experimentally validated with double-headed pyridine analogs. The compounds reported here are among the most potent and selective monocationic pyrrolidine-based nNOS inhibitors reported to date, and 10 shows improved membrane permeability. | |||
Selective Monocationic Inhibitors of Neuronal Nitric Oxide Synthase. Binding Mode Insights from Molecular Dynamics Simulations.,Huang H, Ji H, Li H, Jing Q, Jansen Labby K, Martasek P, Roman LJ, Poulos TL, Silverman RB J Am Chem Soc. 2012 Jun 25. PMID:22731813<ref>PMID:22731813</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | |||
*[[Nitric Oxide Synthase|Nitric Oxide Synthase]] | |||
== | == References == | ||
[[ | <references/> | ||
__TOC__ | |||
== | </StructureSection> | ||
< | |||
[[Category: Nitric-oxide synthase]] | [[Category: Nitric-oxide synthase]] | ||
[[Category: Rattus norvegicus]] | [[Category: Rattus norvegicus]] | ||
[[Category: Li, H | [[Category: Li, H]] | ||
[[Category: Poulos, T L | [[Category: Poulos, T L]] | ||
[[Category: Inhibitor binding]] | [[Category: Inhibitor binding]] | ||
[[Category: Nitric oxide synthase]] | [[Category: Nitric oxide synthase]] | ||
[[Category: Oxidoreductase-oxidoreductase inhibitor complex]] | [[Category: Oxidoreductase-oxidoreductase inhibitor complex]] | ||
Revision as of 19:26, 9 December 2014
Structure of rat nitric oxide synthase heme domain in complex with 6-(((3R,4R)-4-(4-(3-chloro-5-fluorophenoxy)butoxy)pyrrolidin-3-yl)methyl)-4-methylpyridin-2-amineStructure of rat nitric oxide synthase heme domain in complex with 6-(((3R,4R)-4-(4-(3-chloro-5-fluorophenoxy)butoxy)pyrrolidin-3-yl)methyl)-4-methylpyridin-2-amine
Structural highlights
Publication Abstract from PubMedThe reduction of pathophysiologic levels of nitric oxide through inhibition of neuronal nitric oxide synthase (nNOS) has the potential to be therapeutically beneficial in various neurodegenerative diseases. We have developed a series of pyrrolidine-based nNOS inhibitors that exhibit excellent potencies and isoform selectivities (J. Am. Chem. Soc. 2010, 132, 5437). However, there are still important challenges, such as how to decrease the multiple positive charges derived from basic amino groups, which contribute to poor bioavailability, without losing potency and/or selectivity. Here we present an interdisciplinary study combining molecular docking, crystallography, molecular dynamics simulations, synthesis, and enzymology to explore potential pharmacophoric features of nNOS inhibitors and to design potent and selective monocationic nNOS inhibitors. The simulation results indicate that different hydrogen bond patterns, electrostatic interactions, hydrophobic interactions, and a water molecule bridge are key factors for stabilizing ligands and controlling ligand orientation. We find that a heteroatom in the aromatic head or linker chain of the ligand provides additional stability and blocks the substrate binding pocket. Finally, the computational insights are experimentally validated with double-headed pyridine analogs. The compounds reported here are among the most potent and selective monocationic pyrrolidine-based nNOS inhibitors reported to date, and 10 shows improved membrane permeability. Selective Monocationic Inhibitors of Neuronal Nitric Oxide Synthase. Binding Mode Insights from Molecular Dynamics Simulations.,Huang H, Ji H, Li H, Jing Q, Jansen Labby K, Martasek P, Roman LJ, Poulos TL, Silverman RB J Am Chem Soc. 2012 Jun 25. PMID:22731813[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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