Abstract:
:The time correlation function of the shape fluctuations of large (greater than 10 micron), cylindrical, hydrated, phospholipid-membrane vesicles consisting of one bimolecular layer was measured. The restoring force of the membrane was due to the excess curvature of a membrane element. A value for the curvature elastic modulus, Kc, was obtained from the mean-square amplitude of the normal modes of the fluctuations using the equipartition theorem. An expression for the correlation time was found by solving the dynamics of the membrane's relaxation against the low Reynolds number viscous drag of the surrounding fluid. The amplitudes and correlation times of the fundamental bending mode of the cylindrical vesicles both yield Kc = 1-2 X 10(-12) ergs.
journal_name
Biophys Jjournal_title
Biophysical journalauthors
Schneider MB,Jenkins JT,Webb WWdoi
10.1016/S0006-3495(84)84235-6subject
Has Abstractpub_date
1984-05-01 00:00:00pages
891-9issue
5eissn
0006-3495issn
1542-0086pii
S0006-3495(84)84235-6journal_volume
45pub_type
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