NMR observation of gramicidin A' in phosphatidylcholine vesicles.
Identifieur interne : 004B52 ( Main/Curation ); précédent : 004B51; suivant : 004B53NMR observation of gramicidin A' in phosphatidylcholine vesicles.
Auteurs : G W Feigenson ; P R Meers ; P B KingsleySource :
- Biochimica et biophysica acta [ 0006-3002 ] ; 1977.
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- MESH :
English descriptors
- KwdEn :
- MESH :
Abstract
Dimyristoyl phosphatidylcholine was prepared with perdeuterated hydrocarbon chains and sonicated into bilayer vesicles together with gramicidin A'. The 1H NMR resonance from the tryptophan residues in the gramicidin has a linewidth of approximately 80 Hz, indicating significant local mobility for these residues. Paramagnetic lanthanides added to the aqueous medium cause a chemical shift of this signal indicating that some of the tryptophans may be located in the interfacial region of the bilayer.
PubMed: 72565
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pubmed:72565Le document en format XML
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<author><name sortKey="Meers, P R" sort="Meers, P R" uniqKey="Meers P" first="P R" last="Meers">P R Meers</name>
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<author><name sortKey="Kingsley, P B" sort="Kingsley, P B" uniqKey="Kingsley P" first="P B" last="Kingsley">P B Kingsley</name>
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<author><name sortKey="Meers, P R" sort="Meers, P R" uniqKey="Meers P" first="P R" last="Meers">P R Meers</name>
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<author><name sortKey="Kingsley, P B" sort="Kingsley, P B" uniqKey="Kingsley P" first="P B" last="Kingsley">P B Kingsley</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Gramicidin</term>
<term>Kinetics</term>
<term>Magnetic Resonance Spectroscopy</term>
<term>Membranes, Artificial</term>
<term>Models, Biological</term>
<term>Myristic Acids</term>
<term>Phosphatidylcholines</term>
<term>Thulium</term>
<term>Tryptophan</term>
<term>Yttrium</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Acides myristiques</term>
<term>Cinétique</term>
<term>Gramicidine</term>
<term>Membrane artificielle</term>
<term>Modèles biologiques</term>
<term>Phosphatidylcholines</term>
<term>Spectroscopie par résonance magnétique</term>
<term>Thulium</term>
<term>Tryptophane</term>
<term>Yttrium</term>
</keywords>
<keywords scheme="MESH" type="chemical" xml:lang="en"><term>Gramicidin</term>
<term>Membranes, Artificial</term>
<term>Myristic Acids</term>
<term>Phosphatidylcholines</term>
<term>Thulium</term>
<term>Tryptophan</term>
<term>Yttrium</term>
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<keywords scheme="MESH" xml:lang="en"><term>Kinetics</term>
<term>Magnetic Resonance Spectroscopy</term>
<term>Models, Biological</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Acides myristiques</term>
<term>Cinétique</term>
<term>Gramicidine</term>
<term>Membrane artificielle</term>
<term>Modèles biologiques</term>
<term>Phosphatidylcholines</term>
<term>Spectroscopie par résonance magnétique</term>
<term>Thulium</term>
<term>Tryptophane</term>
<term>Yttrium</term>
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<front><div type="abstract" xml:lang="en">Dimyristoyl phosphatidylcholine was prepared with perdeuterated hydrocarbon chains and sonicated into bilayer vesicles together with gramicidin A'. The 1H NMR resonance from the tryptophan residues in the gramicidin has a linewidth of approximately 80 Hz, indicating significant local mobility for these residues. Paramagnetic lanthanides added to the aqueous medium cause a chemical shift of this signal indicating that some of the tryptophans may be located in the interfacial region of the bilayer.</div>
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