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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
|
| pubmed:dateCreated |
1977-7-18
|
| pubmed:abstractText |
The broad, environmentally sensitive 2935-2910 cm-1 feature in the vibrational Raman spectra of phospholipids originates primarily from methylene symmetric carbon-hydrogen (C-H) stretching modes. For ordered acyl chains exhibiting local C2h symmetry at low temperatures, the infrared active methylene C-H asymmetric stretching modes become increasingly apparent at higher temperatures in the Raman spectrum as intramolecular chain disorder (trans-gauche isomerization) leads to a loss of chain symmetry. The 2935 cm-1 shoulder, assigned to the acyl chain methyl group C-H symmetric stretching vibration, is difficult to distinguish as a separate spectral transition in the chain disordered state. An ordering of lipid fluidity for several phospholipids is presented in terms of the intensities of features in the 3000-2800 cm-1 region with particular emphasis upon the 2935-2910 cm-1 contour.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
May
|
| pubmed:issn |
0006-3002
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
25
|
| pubmed:volume |
487
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
388-94
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading | |
| pubmed:year |
1977
|
| pubmed:articleTitle |
Comment on the carbon-hydrogen stretching region of vibrational Raman spectra of phospholipids.
|
| pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
|