1994
DOI: 10.1016/s0006-3495(94)80941-5
|View full text |Cite
|
Sign up to set email alerts
|

Pressure-induced correlation field splitting of vibrational modes: structural and dynamic properties in lipid bilayers and biomembranes

Abstract: Correlation field splittings of the vibrational modes of methylene chains in lipid bilayers, isolated lipid molecules in perdeuterated lipid bilayers, crystalline lipid, and interdigitated lipid bilayers have been investigated by pressure-tuning Fourier-transform infrared spectroscopy. The correlation field splittings of these modes are originating from the vibrational coupling interactions between the fully extended methylene chains with different site symmetry along each bilayer leaflet. The interchain-inter… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1

Citation Types

0
4
1

Year Published

1995
1995
2014
2014

Publication Types

Select...
9

Relationship

0
9

Authors

Journals

citations
Cited by 18 publications
(5 citation statements)
references
References 42 publications
0
4
1
Order By: Relevance
“…For the asymmetrical bolalipid PC-C17pPhC17-OH this change in frequency is conceivably related to different chain packing modes in the ordered lamellar phases. However, in contrast to previous results found for the lamellar phase of an asymmetric phenylene-free bolalipid, a splitting of the methylene deformational band was not observed at low temperature, indicating an orthorhombic perpendicular packing of the alkyl chains. Obviously, the additional phenyl ring in the middle part of the alkyl chain leads to some distortion, and the alkyl chains cannot come in a very close and highly ordered contact required for the appearance of this splitting. Nevertheless, the change in frequency of the CH 2 stretching bands and the CH 2 deformation band indicates a very cooperative change in chain packing at this temperature.…”
Section: Resultscontrasting
confidence: 66%
“…For the asymmetrical bolalipid PC-C17pPhC17-OH this change in frequency is conceivably related to different chain packing modes in the ordered lamellar phases. However, in contrast to previous results found for the lamellar phase of an asymmetric phenylene-free bolalipid, a splitting of the methylene deformational band was not observed at low temperature, indicating an orthorhombic perpendicular packing of the alkyl chains. Obviously, the additional phenyl ring in the middle part of the alkyl chain leads to some distortion, and the alkyl chains cannot come in a very close and highly ordered contact required for the appearance of this splitting. Nevertheless, the change in frequency of the CH 2 stretching bands and the CH 2 deformation band indicates a very cooperative change in chain packing at this temperature.…”
Section: Resultscontrasting
confidence: 66%
“…Infrared Spectra of Ester and Phosphate Groups of Phospholipids. Alterations in hydrogen bonding, orientation of the headgroup, and differences in chain packing of phospholipids can be monitored at the CO and O−P−O stretching vibration level ( ). The DMPC−DMPG CO vibrations at 1740 cm -1 did not significantly change in the presence or in the absence of mtCK (not shown), indicating that the protein binding did not cause any modification at the phospholipid carbonyl level and that there was no formation or breaking of the hydrogen bonds involving these carbonyl groups.…”
Section: Resultsmentioning
confidence: 99%
“…Infrared spectra of lipids were characterized by the CH 2 (2850 and 2920 cm -1 ) and CH 3 (2870 and 2960 cm -1 ) symmetrical and asymmetrical stretching vibrations, which are sensitive to the motional freedom of the methylene and methyl groups and thus to temperature, and to the membrane physical state ( ). The ester CO stretching band at about 1740 cm -1 and the phosphate symmetric and asymmetric bands at around 1070 and 1200 cm -1 , respectively, are sensitive to the formation of hydrogen bonds ( ).…”
mentioning
confidence: 99%
“…At ambient pressure, both vibrational modes consist of a single band that splits into two at sufficiently high pressures. This so-called correlation field splitting originates from the vibrational coupling interaction between the fully extended methylene chains with different site symmetry along each bilayer leaflet …”
Section: Resultsmentioning
confidence: 99%