2k9b: Difference between revisions

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[[Image:2k9b.png|left|200px]]
==Structure and membrane interactions of the antibiotic peptide dermadistinctin K by multidimensional solution and oriented 15N and 31P solid-state NMR spectroscopy==
<StructureSection load='2k9b' size='340' side='right' caption='[[2k9b]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2k9b]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2K9B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2K9B FirstGlance]. <br>
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=NH2:AMINO+GROUP'>NH2</scene></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=2k9b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2k9b OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2k9b RCSB], [http://www.ebi.ac.uk/pdbsum/2k9b PDBsum]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
DD K, a peptide first isolated from the skin secretion of the Phyllomedusa distincta frog, has been prepared by solid-phase chemical peptide synthesis and its conformation was studied in trifluoroethanol/water as well as in the presence of sodium dodecyl sulfate and dodecylphosphocholine micelles or small unilamellar vesicles. Multidimensional solution NMR spectroscopy indicates an alpha-helical conformation in membrane environments starting at residue 7 and extending to the C-terminal carboxyamide. Furthermore, DD K has been labeled with (15)N at a single alanine position that is located within the helical core region of the sequence. When reconstituted into oriented phosphatidylcholine membranes the resulting (15)N solid-state NMR spectrum shows a well-defined helix alignment parallel to the membrane surface in excellent agreement with the amphipathic character of DD K. Proton-decoupled (31)P solid-state NMR spectroscopy indicates that the peptide creates a high level of disorder at the level of the phospholipid headgroup suggesting that DD K partitions into the bilayer where it severely disrupts membrane packing.


{{STRUCTURE_2k9b|  PDB=2k9b  |  SCENE=  }}
Structure and membrane interactions of the antibiotic peptide dermadistinctin K by multidimensional solution and oriented 15N and 31P solid-state NMR spectroscopy.,Verly RM, de Moraes CM, Resende JM, Aisenbrey C, Bemquerer MP, Pilo-Veloso D, Valente AP, Almeida FC, Bechinger B Biophys J. 2009 Mar 18;96(6):2194-203. PMID:19289046<ref>PMID:19289046</ref>


===Structure and membrane interactions of the antibiotic peptide dermadistinctin K by multidimensional solution and oriented 15N and 31P solid-state NMR spectroscopy===
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 
</div>
{{ABSTRACT_PUBMED_19289046}}
== References ==
 
<references/>
==About this Structure==
__TOC__
[[2k9b]] is a 1 chain structure. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2K9B OCA].
</StructureSection>
 
==Reference==
<ref group="xtra">PMID:019289046</ref><references group="xtra"/>
[[Category: Aisenbrey, C.]]
[[Category: Aisenbrey, C.]]
[[Category: Almeida, F C.L.]]
[[Category: Almeida, F C.L.]]
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