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水稻紫黄质脱环氧化酶基因的克隆、体外表达及酶促反应 被引量:5

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摘要 从水稻中克隆了紫黄质脱环氧化酶(VDE)基因,其全长cDNA序列为1887bp,编码446个氨基酸,其中转运肽长98个氨基酸.构建了该基因的原核表达载体pET-Rvde,在0.4 mmol/L IPTG的诱导下,外源蛋白大量表达,其分子量与天然的VDE蛋白一致,表达量随诱导时间而增加.Western杂交表明表达蛋白与VDE的多克隆抗体有免疫反应.将表达蛋白用于紫黄质的脱环氧化反应,吸收光谱及HPLC分析结果表明,表达蛋白能在体外催化紫黄质转变成为玉米黄质和环氧玉米黄质.
出处 《科学通报》 EI CAS CSCD 北大核心 2002年第6期449-451,共3页 Chinese Science Bulletin
基金 本工作为国家重点基础研究发展规划(批准号:G1998010100) 中国科学院植物研究所光合作用基础研究开放实验室创新基金资助项目.
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