1rs6

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(New page: 200px<br /><applet load="1rs6" size="450" color="white" frame="true" align="right" spinBox="true" caption="1rs6, resolution 1.95&Aring;" /> '''Rat neuronal NOS hem...)
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[[Image:1rs6.gif|left|200px]]<br /><applet load="1rs6" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1rs6, resolution 1.95&Aring;" />
 
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'''Rat neuronal NOS heme domain with D-lysine-D-nitroarginine amide bound'''<br />
 
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==Overview==
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==Rat neuronal NOS heme domain with D-lysine-D-nitroarginine amide bound==
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In a continuing effort to unravel the structural basis for, isoform-selective inhibition of nitric oxide synthase (NOS) by various, inhibitors, we have determined the crystal structures of the nNOS and eNOS, heme domain bound with two D-nitroarginine-containing dipeptide, inhibitors, D-Lys-D-Arg(NO)2-NH(2) and D-Phe-D-Arg(NO)2-NH(2). These two, dipeptide inhibitors exhibit similar binding modes in the two constitutive, NOS isozymes, which is consistent with the similar binding affinities for, the two isoforms as determined by K(i) measurements. The, D-nitroarginine-containing dipeptide inhibitors are not distinguished by, the amino acid difference between nNOS and eNOS (Asp 597 and Asn 368, respectively) which is key in controlling isoform selection for nNOS over, eNOS observed for the L-nitroarginine-containing dipeptide inhibitors, reported previously [Flinspach, M., et al. (2004) Nat. Struct. Mol. Biol., 11, 54-59]. The lack of a free alpha-amino group on the D-nitroarginine, moiety makes the dipeptide inhibitor steer away from the amino acid, binding pocket near the active site. This allows the inhibitor to extend, into the solvent-accessible channel farther away from the active site, which enables the inhibitors to explore new isoform-specific, enzyme-inhibitor interactions. This might be the structural basis for why, these D-nitroarginine-containing inhibitors are selective for nNOS (or, eNOS) over iNOS.
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<StructureSection load='1rs6' size='340' side='right'caption='[[1rs6]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1rs6]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RS6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RS6 FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95&#8491;</td></tr>
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<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=DP2:L-LYSYL-N~5~-[(Z)-(2,2-DIHYDROXYHYDRAZINO)(IMINO)METHYL]-L-ORNITHINAMIDE'>DP2</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=MTL:D-MANNITOL'>MTL</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1rs6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rs6 OCA], [https://pdbe.org/1rs6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rs6 RCSB], [https://www.ebi.ac.uk/pdbsum/1rs6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rs6 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://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.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rs/1rs6_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1rs6 ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1RS6 is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus] with MAN, ACT, ZN, HEM, H4B and DP2 as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [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] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1RS6 OCA].
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*[[Nitric Oxide Synthase 3D structures|Nitric Oxide Synthase 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Structures of the neuronal and endothelial nitric oxide synthase heme domain with D-nitroarginine-containing dipeptide inhibitors bound., Flinspach M, Li H, Jamal J, Yang W, Huang H, Silverman RB, Poulos TL, Biochemistry. 2004 May 11;43(18):5181-7. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15122883 15122883]
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[[Category: Large Structures]]
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[[Category: Nitric-oxide synthase]]
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[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: Flinspach M]]
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[[Category: Flinspach, M.]]
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[[Category: Huang H]]
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[[Category: Huang, H.]]
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[[Category: Jamal J]]
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[[Category: Jamal, J.]]
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[[Category: Li H]]
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[[Category: Li, H.]]
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[[Category: Poulos TL]]
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[[Category: Poulos, T.L.]]
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[[Category: Silverman RB]]
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[[Category: Silverman, R.B.]]
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[[Category: Yang W]]
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[[Category: Yang, W.]]
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[[Category: ACT]]
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[[Category: DP2]]
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[[Category: H4B]]
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[[Category: HEM]]
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[[Category: MAN]]
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[[Category: ZN]]
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[[Category: heme-enzyme]]
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[[Category: nitric oxide synthase]]
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[[Category: oxidoreductase]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 01:50:02 2007''
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Current revision

Rat neuronal NOS heme domain with D-lysine-D-nitroarginine amide bound

PDB ID 1rs6

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