Abstract:
:Kinetin is shown to increase substantially the water permeability of liposomes composed of several types of phosphatidylcholines including the natural phospholipids egg lecithin and asolectin and the synthetic phospholipids dimyristoylphosphatidylcholine and dipalmitoylphosphatidylcholine. Kinetin effects were measured from 16.3 micromolar to 2.4 millimolar at temperatures from 10 degrees C to 50 degrees C and at pH 2.0, 7.0, and 11.0. Temperature studies indicate that kinetin produces a larger increase in water permeability with membranes in the more fluid liquid crystalline state. Kinetin is also shown to enhance [(14)C]glucose permeability and perhaps promotes membrane aggregation. From these experiments, we conclude that kinetin may produce its initial effect by altering the lipid bilayer portion of membranes.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Stillwell W,Hester Pdoi
10.1104/pp.71.3.524subject
Has Abstractpub_date
1983-03-01 00:00:00pages
524-30issue
3eissn
0032-0889issn
1532-2548journal_volume
71pub_type
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