Abstract
Intramembrane electric field strength is a very likely determinant of the activity of ion-transporting membrane proteins in living cells. In the absence of any transmembrane electrical potential or surface potential, its magnitude is determined by the dipole potential of the membrane's lipid components and their associated water of hydration. Here we have used a fluorometric method to quantify the dipole potential of vesicles formed from lipids extracted from kidney and brain of 11 different animal species from four different vertebrate classes. The dipole potential was compared with the fatty acid composition and with the Na+-K+-ATPase molecular activity of each preparation. The magnitude of the dipole potential was found to be relatively constant across all animal species, i.e., 236–334 mV for vesicles prepared from the total membrane lipids and 223–256 mV for phospholipids alone. The significantly lower value for phospholipids alone is potentially related to the removal of cholesterol and/or other common soluble lipid molecules from the membrane. Surprisingly, no significant dependence of the dipole potential on fatty acid composition was found. This may, however, be due to concomitant compensatory variations in lipid head group composition. The molecular activity of the Na+-K+-ATPase was found to increase with increasing dipole potential. The fact that the dipole potential is maintained at a relatively constant value over a wide range of animal species suggests that it may play a fundamental role in ensuring correct ion pump conformation and function within the membrane.
Bibliography
Starke-Peterkovic, T., Turner, N., Else, P. L., & Clarke, R. J. (2005). Electric field strength of membrane lipids from vertebrate species: membrane lipid composition and Na+-K+-ATPase molecular activity. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 288(3), R663âR670.
References
53
Referenced
60
10.1016/S0006-3495(75)85856-5
10.1016/0005-2736(89)90296-4
10.1007/BF01870529
10.1038/271182a0
10.1021/bi00567a034
- Cevc Gand Marsh D.Phospholipid Bilayers. New York: Wiley-Interscience, 1987, p. 232–237.
10.1016/S0005-2736(97)00075-8
-
Clarke RJ.The dipole potential of phospholipid membranes and methods for its detection.Adv Colloid Interface Sci89–90: 263–281, 2001.
(
10.1016/S0001-8686(00)00061-0
) 10.1016/S0005-2736(96)00188-5
10.1016/0005-2736(71)90123-4
10.1021/bi010541g
10.1021/bi034532e
10.1146/annurev.biochem.66.1.199
10.1038/415287a
10.1007/s003600050224
-
Fiehn Wand Peter JB.Lipids and fatty acids of sarcolemma, sarcoplasmic reticulum, and mitochondria from rat skeletal muscle.J Biol Chem246: 5617–5620, 1971.
(
10.1016/S0021-9258(18)61852-6
) -
Folch J, Less M, and Stanley GHS.A simple method for the isolation and purification of total lipids from animal tissues.J Biol Chem226: 497–509, 1957.
(
10.1016/S0021-9258(18)64849-5
) 10.1016/S0006-3495(99)76888-8
10.1016/S0006-3495(92)81931-8
10.1016/S0006-3495(94)80471-0
- Hille B.Ionic Channels of Excitable Membranes(2nd ed.). Sunderland, MA: Sinauer Associates, 1992.
10.1016/0005-2736(73)90211-3
10.1146/annurev.bb.15.060186.001115
10.1152/ajpregu.1989.256.1.R63
10.1016/S1096-4959(02)00066-0
10.1021/bi00666a005
-
Janiak MJ, Small DM, and Shipley GG.Temperature and compositional dependence of the structure of hydrated dimyristoyl lecithin.J Biol Chem254: 6068–6078, 1979.
(
10.1016/S0021-9258(18)50520-2
) 10.1016/0005-2736(74)90292-2
10.1074/jbc.270.9.4244
-
Lis LJ, McAlister M, Fuller N, Rand RP, and Parsegian VA.Interactions between neutral phospholipid bilayer membranes.Biophys J37: 657–666, 1982.
(
10.1016/S0006-3495(21)00385-4
) 10.1016/0005-2736(86)90120-3
- Marsh D.CRC Handbook of Lipid Bilayers.Boca Raton, FL: CRC Press, 1990, p. 121–133.
10.1016/S0006-3495(01)75941-3
- Mills GL, Lane PA, and Weech PK.A guidebook to lipoprotein technique. In:Laboratory Techniques in Biochemistry and Molecular Biology, edited by Burdon RH and van Knippenberg PH. New York: Elsevier Science, 1984, p. 240–241.
10.1016/S0006-3495(93)81514-5
10.1016/S0006-3495(96)79701-1
10.1038/260799a0
10.1093/jn/123.3.512
10.1016/S0009-3084(02)00013-0
10.1007/BF01944229
10.1021/bi9919549
10.1126/science.402030
10.1016/S0006-3495(02)75649-X
10.1038/42408
10.1016/S0006-3495(90)82365-1
10.1016/0005-2760(94)90036-1
10.1016/0304-4157(89)90019-1
10.1152/ajpregu.00297.2004
10.1007/s00114-003-0470-z
-
Wu BJ, Else PL, Storlien LH, and Hulbert AJ.Molecular activity of Na+/K+-ATPase from different sources is related to the packing of membrane lipids.J Exp Biol204: 4271–4280, 2001.
(
10.1242/jeb.204.24.4271
) 10.1016/0005-2736(95)00058-B
10.1021/j100057a029
10.1016/0005-2736(93)90406-P
Dates
Type | When |
---|---|
Created | 20 years, 9 months ago (Nov. 11, 2004, 8:25 p.m.) |
Deposited | 4 years, 2 months ago (June 28, 2021, 1:45 a.m.) |
Indexed | 4 months, 4 weeks ago (April 1, 2025, 4:26 a.m.) |
Issued | 20 years, 5 months ago (March 1, 2005) |
Published | 20 years, 5 months ago (March 1, 2005) |
Published Print | 20 years, 5 months ago (March 1, 2005) |
@article{Starke_Peterkovic_2005, title={Electric field strength of membrane lipids from vertebrate species: membrane lipid composition and Na+-K+-ATPase molecular activity}, volume={288}, ISSN={1522-1490}, url={http://dx.doi.org/10.1152/ajpregu.00434.2004}, DOI={10.1152/ajpregu.00434.2004}, number={3}, journal={American Journal of Physiology-Regulatory, Integrative and Comparative Physiology}, publisher={American Physiological Society}, author={Starke-Peterkovic, Thomas and Turner, Nigel and Else, Paul L. and Clarke, Ronald J.}, year={2005}, month=mar, pages={R663–R670} }