Localization of Spin Labels in Oat Leaf Protoplasts | Zendy

Steven P. Briggs | Zendy; Alfred Haug | Zendy; R. P. Scheffer | Zendy

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Localization of Spin Labels in Oat Leaf Protoplasts

Author(s) -

Steven P. Briggs,

Alfred Haug,

R. P. Scheffer

Publication year - 1982

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.70.3.662

Subject(s) - avena , protoplast , iodoacetamide , fatty acid , chemistry , spin label , biochemistry , botany , biology , membrane , enzyme , cysteine

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.

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