Occurrence of norspermine in Euglena gracilis. |
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Authors: | H Kneifel F Schuber A Aleksijevic J Grove |
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Institution: | 4. Russell Grimwade School of Biochemistry, University of Melbourne, Parkville, Victoria, 3052, Australia |
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Abstract: | A series of fluorescent probes which locate a graded series of depths from the surface to the centre of the lipid bilayer have been used to measure the fluidity gradient in liposomes and natural membranes. In dioleoyl phosphatidylcholine liposomes and in cells which have a high content of unsaturated phospholipids, a region of high microviscosity is detected near the cis double bond/s. The significance of this phenomenon is discussed in terms of the penetration and lateral movement of membrane protein. |
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