Cell membrane localization of sterols with conventional and unusual side chains in two marine demonsponges
- 1 August 1988
- Vol. 23 (8), 750-754
- https://doi.org/10.1007/bf02536216
Abstract
Subcellular fractionation by differential centrifugation was performed on two previously unstudied marine sponges that predominantly contain either conventional (Reniera sp.) or unconventional (Pseudaxinyssa sp.) sterols. Direct evidence for the presence of unconventional sterols with C24 alkylated side chains in the cellular membranes ofPseudaxinyssa sp. is provided, but the presence of unconventional sterols in sponge membranes is shown not to be a universal feature of the Porifera. Possible structural and functional roles of unconventional lipid molecules in sponge cell membranes are discussed.This publication has 38 references indexed in Scilit:
- Biosynthetic studies of marine lipids. 9. Stereochemical aspects and hydrogen migrations in the biosynthesis of the triply alkylated side chain of the sponge sterol strongylosterolJournal of the American Chemical Society, 1986
- Biophysical properties of unusual phospholipids and sterols from marine invertebratesBiochimica et Biophysica Acta (BBA) - Biomembranes, 1986
- Specificity of bacterial symbionts in Mediterranean and Great Barrier Reef spongesMicrobial Ecology, 1981
- 24‐Isopropylcholesterol and 22‐Dehydro‐24‐isopropylcholesterol, Novel Sterols from a SpongeHelvetica Chimica Acta, 1979
- Influence of Plant Sterols on the Phase Properties of Phospholipid BilayersPlant Physiology, 1979
- The function of sterols in membranesBiochimica et Biophysica Acta (BBA) - Reviews on Biomembranes, 1976
- Natural Product Chemistry of the Marine SpongesPure and Applied Chemistry, 1976
- Metabolism in porifera IV. Biosynthesis of the 3β-Hydroxymethyl-A-nor-5α-Steranes from cholesterol byAxinella verrucosaCellular and Molecular Life Sciences, 1975
- Mortality of Thick-billed Murres in the West Greenland Salmon FisheryNature, 1972
- Environmentally produced alterations of the tetra-hymanol: Phospholipid ratio in Tetrahymena pyriformis membranesBiochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1972