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Báo cáo khoa học: ATPase activity of magnesium chelatase subunit I is required to maintain subunit D in vivo

Chia sẻ: Nguyen Thang | Ngày: | Loại File: PDF | Số trang:7

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During biosynthesis of chlorophyll, Mg 2+ is inserted into protoporphyrin IX by magnesium chelatase. This enzyme consists of three different subunits of 40, 70 and 140 kDa. Seven barley mutants deficient in the 40 kDa magnesium chelatase subunit were analysed and it was found that this subunit is essential for the maintenance of the 70 kDa subunit, but not the 140 kDa subunit. The 40 kDa subunit has been shown to belong to the family of proteins calledATPases associated with various cellu-lar activities, known to form ring-shaped oligomeric complexes working as molecular chaperones....

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Nội dung Text: Báo cáo khoa học: ATPase activity of magnesium chelatase subunit I is required to maintain subunit D in vivo

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