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Water Permeability of Thin Lipid Membranes
Open accessAbstract
The osmotic permeability coefficient, Pf, and the tagged water permeability coefficient, Pd, were determined for thin (<100 A) lipid membranes formed from ox brain lipids plus DL-α-tocopherol; their value of approximately 1 x 10-3 cm/sec is within the range reported for plasma membranes. It was established that Pf = Pd. Other reports that Pf > Pd can be attributed to the presence of unstirred layers in the experimental determination of Pd. Thus, there is no evidence for the existence of aqueous pores in these thin phospholipid membranes. The adsorption onto the membrane of a protein that lowers its electrical resistance by a factor of 103 was found not to affect its water permeability; however, glucose and sucrose were found to interact with the membrane to modify Pf. Possible mechanisms of water transport across these films are discussed, together with the implications of data obtained on these structures for plasma membranes.
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Citations
Cited by
Kansy, M., Senner, F., & Gubernator, K. (1998) · Journal of Medicinal Chemistry · doi:10.1021/jm970530e · Cited by 1,304
Molecular Dynamics Simulations of Membrane Permeability
Venable, R. M., Krämer, A., & Pastor, R. W. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00486 · Cited by 394
The movement of molecules across lipid membranes: A molecular theory
Träuble, H. (1971) · The Journal of Membrane Biology · doi:10.1007/bf02431971 · Cited by 391
Cass, A., Finkelstein, A., & Krespi, V. (1970) · The Journal of General Physiology · doi:10.1085/jgp.56.1.100 · Cited by 276
Self-citationBody Fluid Dynamics: Back to the Future
Bhave, G., & Neilson, E. G. (2011) · Journal of the American Society of Nephrology · doi:10.1681/asn.2011080865 · Cited by 215
Metadata
- Authors
- Cass, A., & Finkelstein, A.
- Venue
- The Journal of General Physiology
- Publisher
- Rockefeller University Press
- Published
- 1967-07-01
- Volume
- 50
- Issue
- 6
- Pages
- 1765-1784
- ISSN
- 0022-1295 (ISSN-L)
- 1540-7748
- OpenAlex
- W1996903698
- Cited by
- 247
- References
- 0
- FWCI
- 10.85
- Type
- journal article
- Language
- en
- Open access
- green
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