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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
7
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pubmed:dateCreated |
1984-6-22
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pubmed:abstractText |
A new subgel phase is demonstrated to occur in hydrated dimyristoylphosphatidylethanolamine ( DMPE ) by using dilatometric and calorimetric techniques. The formation of the subgel phase takes place very slowly at temperatures near 0 degree C, but it can still be observed at 25 degrees C. Once formed, the subgel phase melts (delta Hh = 16.0 +/- 0.6 kcal/mol and delta V = 0.085 +/- 0.014 mL/g) directly into the liquid-crystalline phase at a temperature, Th = 56.3 degrees C, that is higher than the gel to liquid-crystalline transition temperature, Tm = 49.6 degrees C. Thus, the gel phase appears to be metastable over its entire temperature range. In this regard, DMPE behaves differently from dipalmitoylphosphatidylcholine and distearoylphosphatidylcholine but similarly to dilaurylphosphatidylethanolamine . This unusual long-lived metastability provides cells an additional option in determining the properties of membranes.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/1,2-dimyristoylphosphatidylethanolam...,
http://linkedlifedata.com/resource/pubmed/chemical/Gels,
http://linkedlifedata.com/resource/pubmed/chemical/Lipid Bilayers,
http://linkedlifedata.com/resource/pubmed/chemical/Phosphatidylethanolamines,
http://linkedlifedata.com/resource/pubmed/chemical/Water
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pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0006-2960
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
27
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pubmed:volume |
23
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1538-41
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:6722106-Chemistry, Physical,
pubmed-meshheading:6722106-Gels,
pubmed-meshheading:6722106-Lipid Bilayers,
pubmed-meshheading:6722106-Phosphatidylethanolamines,
pubmed-meshheading:6722106-Physicochemical Phenomena,
pubmed-meshheading:6722106-Thermodynamics,
pubmed-meshheading:6722106-Water
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pubmed:year |
1984
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pubmed:articleTitle |
Metastability in the phase behavior of dimyristoylphosphatidylethanolamine bilayers.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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