1n6t

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(New page: 200px<br /><applet load="1n6t" size="450" color="white" frame="true" align="right" spinBox="true" caption="1n6t" /> '''Solution Structure of the Tachykinin Peptide...)
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[[Image:1n6t.jpg|left|200px]]<br /><applet load="1n6t" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1n6t" />
 
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'''Solution Structure of the Tachykinin Peptide Neurokinin A'''<br />
 
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==Overview==
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==Solution Structure of the Tachykinin Peptide Neurokinin A==
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The solution structure of NKA, a decapeptide of mammalian origin, has been, characterized by CD spectropolarimetry and 2D proton nuclear magnetic, resonance (2D 1H-NMR) spectroscopy in both aqueous and membrane mimetic, solvents. Unambiguous NMR assignments of protons have been made with the, aid of correlation spectroscopy (DQF-COSY and TOCSY) experiments and, nuclear Overhauser effect spectroscopy (NOESY and ROESY) experiments. The, distance constraints obtained from the NMR data have been utilized to, generate a family of structures, which have been refined using restrained, energy minimization and dynamics. These data show that in water NKA, prefers to be in an extended chain conformation whereas a helical, conformation is induced in the central core and the C-terminal region, (D4-M10) of the peptide in the presence of perdeuterated, dodecylphosphocholine (DPC) micelles, a membrane model system. Though less, defined the N-terminus also displays some degree of order and a possible, turn structure. The conformation adopted by NKA in the presence of DPC, micelles represents a structural motif typical of neurokinin-2 selective, agonists and is similar to that reported for eledoisin in hydrophobic, environment.
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<StructureSection load='1n6t' size='340' side='right'caption='[[1n6t]]' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[1n6t]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1N6T OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1N6T FirstGlance]. <br>
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1N6T is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1N6T OCA].
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=1n6t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1n6t OCA], [https://pdbe.org/1n6t PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1n6t RCSB], [https://www.ebi.ac.uk/pdbsum/1n6t PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1n6t ProSAT]</span></td></tr>
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==Reference==
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</table>
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Three-dimensional structure of the mammalian tachykinin peptide neurokinin A bound to lipid micelles., Chandrashekar IR, Cowsik SM, Biophys J. 2003 Dec;85(6):4002-11. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=14645089 14645089]
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== Function ==
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[[Category: Single protein]]
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[https://www.uniprot.org/uniprot/TKNB_CHICK TKNB_CHICK] Tachykinins are active peptides which excite neurons, evoke behavioral responses, are potent vasodilators and secretagogues, and contract (directly or indirectly) many smooth muscles.
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[[Category: Chandrashekar, I.R.]]
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__TOC__
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[[Category: Cowsik, S.M.]]
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</StructureSection>
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[[Category: 3 10 helix]]
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[[Category: Gallus gallus]]
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[[Category: dpc micelles]]
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[[Category: Large Structures]]
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[[Category: helix]]
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[[Category: Chandrashekar IR]]
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[[Category: lipid induced conformation]]
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[[Category: Cowsik SM]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 22:00:28 2007''
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Current revision

Solution Structure of the Tachykinin Peptide Neurokinin A

PDB ID 1n6t

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