Catalytic Plasticity of Fatty Acid Modification Enzymes Underlying Chemical Diversity of Plant Lipids
摘要：
Higher plants exhibit extensive diversity in the composition of seed storage fatty acids. This is largely due to the presence of various combinations of double or triple bonds and hydroxyl or epoxy groups, which are synthesized by a family of structurally similar enzymes. As few as four amino acid substitutions can convert an oleate 12-desaturase to a hydroxylase and as few as six result in conversion of a hydroxylase to a desaturase. These results illustrate how catalytic plasticity of these diiron enzymes has contributed to the evolution of the chemical diversity found in higher plants.
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关键词：
Fatty Acid Desaturases Fatty Acids Fatty Acids Unsaturated Hydroxylases 脂肪酸去饱和酶类 脂肪酸类 脂肪酸类 不饱和 羟化酶类 植物
DOI：
10.1126/science.282.5392.1315
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年份：
1998
掌桥科研
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万方医学
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