Fat Metabolism in Higher Plants | Zendy

Bruce S. Jacobson | Zendy; Jan G. Jaworski | Zendy; P.K. Stumpf | Zendy

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Fat Metabolism in Higher Plants

Author(s) -

Bruce S. Jacobson,

Jan G. Jaworski,

P.K. Stumpf

Publication year - 1974

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.54.4.484

Subject(s) - spinacia , spinach , ferredoxin , chloroplast , reductase , carthamus , biochemistry , photosystem i , biology , oleic acid , chenopodiaceae , photosynthesis , photosystem ii , enzyme , medicine , gene , traditional medicine

Stearyl-acyl carrier protein desaturase (EC 1.14.99.6), present in the stroma fraction of spinach (Spinacia oleracea) chloroplasts, rapidly desaturated enzymatically prepared stearyl-acyl carrier protein to oleic acid. No other substrates were desaturated. In addition to stearyl-acyl carrier protein, reduced ferredoxin was an essential component of the system. The electron donor systems were either ascorbate, dichlorophenolindophenol, photosystem I and light, or NADPH and ferredoxin-NADP reductase. The desaturase was more active in extracts prepared from chloroplasts obtained from immature spinach leaves than from mature leaves. Stearyl-acyl carrier protein desaturase also occurs in soluble extracts of avocado (Persea americana Mill.) mesocarp and of developing safflower (Carthamus tinctorius) seeds.

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