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集胞藻核亚基 ApcD 及其复合物功能研究

彭 盼盼1, 曹 园1, 彭 丹丹2, 牛 楠楠3
1、新乡职业技术学院,河南 新乡 453003
2、开封高级中学,河南 开封 475003
3、华中农业大学微生物学国家重点实验室,湖北 武汉 430070

摘要


ApcD 作为藻胆体的终端能量发射器之一,其与 ApcA、ApcB 有序紧密的结合在一起,参与藻胆体核的组成,在将藻胆
体捕获的光能高效传递至光反应中心的过程中起着关键的作用。由于 ApcD 是低丰度蛋白,在集胞藻中表达量极低,目前大都是
从大肠杆菌中提取 ApcD 重组蛋白,但研究表明在大肠杆菌中很难实现 ApcD、ApcA、ApcB 复合物的共表达。本研究运用基因工程
和分子生物学等技术,首次分离纯化得到 ApcD、ApcB 与 ApcA 的天然复合物,实现了天然藻胆体核复合物的分离纯化,并分析了
该天然复合物的生物化学特性。

关键词


ApcD,ApcA,ApcB,藻胆体核亚基复合物

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参考


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