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==Structure of rat neuronal nitric oxide synthase heme domain in complex with 7-(3-(Aminomethyl)-4-(thiazol-4-ylmethoxy)phenyl)-4-methylquinolin-2-amine== | ==Structure of rat neuronal nitric oxide synthase heme domain in complex with 7-(3-(Aminomethyl)-4-(thiazol-4-ylmethoxy)phenyl)-4-methylquinolin-2-amine== | ||
<StructureSection load='6pn7' size='340' side='right'caption='[[6pn7]]' scene=''> | <StructureSection load='6pn7' size='340' side='right'caption='[[6pn7]], [[Resolution|resolution]] 1.88Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6PN7 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6PN7 FirstGlance]. <br> | <table><tr><td colspan='2'>[[6pn7]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6PN7 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6PN7 FirstGlance]. <br> | ||
</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6pn7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6pn7 OCA], [http://pdbe.org/6pn7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6pn7 RCSB], [http://www.ebi.ac.uk/pdbsum/6pn7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6pn7 ProSAT]</span></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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=OUJ:7-{3-(aminomethyl)-4-[(1,3-thiazol-4-yl)methoxy]phenyl}-4-methylquinolin-2-amine'>OUJ</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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 Buffalo rat])</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_(NADPH_dependent) Nitric-oxide synthase (NADPH dependent)], 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://proteopedia.org/fgij/fg.htm?mol=6pn7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6pn7 OCA], [http://pdbe.org/6pn7 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6pn7 RCSB], [http://www.ebi.ac.uk/pdbsum/6pn7 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6pn7 ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | |||
[[http://www.uniprot.org/uniprot/NOS1_RAT NOS1_RAT]] Produces nitric oxide (NO) which is a messenger molecule with diverse functions throughout the body. In the brain and peripheral nervous system, NO displays many properties of a neurotransmitter. Inhibitory transmitter for non-adrenergic and non-cholinergic nerves in the colorectum. Probably has nitrosylase activity and mediates cysteine S-nitrosylation of cytoplasmic target proteins such SRR. Inhibitory transmitter for non-adrenergic and non-cholinergic nerves in the colorectum. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Inhibition of neuronal nitric oxide synthase (nNOS), an enzyme implicated in neurodegenerative disorders, is an attractive strategy for treating or preventing these diseases. We previously developed several classes of 2-aminoquinoline-based nNOS inhibitors, but these compounds had drawbacks including off-target promiscuity, low activity against human nNOS, and only modest selectivity for nNOS over related enzymes. In this study, we synthesized new nNOS inhibitors based on 7-phenyl-2-aminoquinoline and assayed them against rat and human nNOS, human eNOS, and murine and (in some cases) human iNOS. Compounds with a meta-relationship between the aminoquinoline and a positively charged tail moiety were potent and had up to nearly 900-fold selectivity for human nNOS over human eNOS. X-ray crystallography indicates that the amino groups of some compounds occupy a water-filled pocket surrounding an nNOS-specific aspartate residue (absent in eNOS). This interaction was confirmed by mutagenesis studies, making 7-phenyl-2-aminoquinolines the first aminoquinolines to interact with this residue. | |||
First Contact: 7-Phenyl-2-Aminoquinolines, Potent and Selective Neuronal Nitric Oxide Synthase Inhibitors That Target an Isoform-Specific Aspartate.,Cinelli MA, Reidl CT, Li H, Chreifi G, Poulos TL, Silverman RB J Med Chem. 2020 Apr 17. doi: 10.1021/acs.jmedchem.9b01573. PMID:32302123<ref>PMID:32302123</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 6pn7" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Buffalo rat]] | |||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Li H]] | [[Category: Li, H]] | ||
[[Category: Poulos | [[Category: Poulos, T L]] | ||
[[Category: Heme enzyme]] | |||
[[Category: Nitric oxide synthase inhibitor]] | |||
[[Category: Oxidoreductase]] | |||
[[Category: Oxidoreductase-inhibitor complex]] | |||
Revision as of 10:21, 27 May 2020
Structure of rat neuronal nitric oxide synthase heme domain in complex with 7-(3-(Aminomethyl)-4-(thiazol-4-ylmethoxy)phenyl)-4-methylquinolin-2-amineStructure of rat neuronal nitric oxide synthase heme domain in complex with 7-(3-(Aminomethyl)-4-(thiazol-4-ylmethoxy)phenyl)-4-methylquinolin-2-amine
Structural highlights
Function[NOS1_RAT] Produces nitric oxide (NO) which is a messenger molecule with diverse functions throughout the body. In the brain and peripheral nervous system, NO displays many properties of a neurotransmitter. Inhibitory transmitter for non-adrenergic and non-cholinergic nerves in the colorectum. Probably has nitrosylase activity and mediates cysteine S-nitrosylation of cytoplasmic target proteins such SRR. Inhibitory transmitter for non-adrenergic and non-cholinergic nerves in the colorectum. Publication Abstract from PubMedInhibition of neuronal nitric oxide synthase (nNOS), an enzyme implicated in neurodegenerative disorders, is an attractive strategy for treating or preventing these diseases. We previously developed several classes of 2-aminoquinoline-based nNOS inhibitors, but these compounds had drawbacks including off-target promiscuity, low activity against human nNOS, and only modest selectivity for nNOS over related enzymes. In this study, we synthesized new nNOS inhibitors based on 7-phenyl-2-aminoquinoline and assayed them against rat and human nNOS, human eNOS, and murine and (in some cases) human iNOS. Compounds with a meta-relationship between the aminoquinoline and a positively charged tail moiety were potent and had up to nearly 900-fold selectivity for human nNOS over human eNOS. X-ray crystallography indicates that the amino groups of some compounds occupy a water-filled pocket surrounding an nNOS-specific aspartate residue (absent in eNOS). This interaction was confirmed by mutagenesis studies, making 7-phenyl-2-aminoquinolines the first aminoquinolines to interact with this residue. First Contact: 7-Phenyl-2-Aminoquinolines, Potent and Selective Neuronal Nitric Oxide Synthase Inhibitors That Target an Isoform-Specific Aspartate.,Cinelli MA, Reidl CT, Li H, Chreifi G, Poulos TL, Silverman RB J Med Chem. 2020 Apr 17. doi: 10.1021/acs.jmedchem.9b01573. PMID:32302123[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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