Localization of spin labels in oat leaf protoplasts [Avena sativa]

An assay based on light-mediated oxidation was used to determine whether specific spin labels were partitioned throughout the protoplast or retained in the plasmalemma of Avena sativa L. cv. Garry and Park. Many classes of spin label were tested, including phospholipids, fatty acid, fatty acid methy...

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Bibliographic Details
Published in:Plant physiology (Bethesda) 1982-09, Vol.70 (3), p.662-667
Main Authors: Briggs, S.P, Haug, A.R, Scheffer, R.P
Format: Article
Language:English
Subjects:
Avena sativa
Cell membranes
Chloroplasts
E.S.R
Electron paramagnetic resonance
Fatty acids
Irradiation
Oats
Oxidation
Protoplasts
Rotation
Spin labels
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Summary:An assay based on light-mediated oxidation was used to determine whether specific spin labels were partitioned throughout the protoplast or retained in the plasmalemma of Avena sativa L. cv. Garry and Park. Many classes of spin label were tested, including phospholipids, fatty acid, fatty acid methyl ester, maleimide, iodoacetamide, short chain hydrocarbon, androstane, 2,2,6,6-tetramethyl-4-aminopiperidinooxyl (TEMPAMINE) and 2,2,6,6-tetramethylpiperidinooxyl (TEMPO). All except the phosphotidylcholine spin label were found to partition throughout the cell. The phosphotidylcholine spin label may have been selectively retained in the plasmalemma.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.70.3.662