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来自甜菜（Beta vulgaris L.）根和子叶的膜结合钾和镁离子刺激的无机焦磷酸酶

Membrane-bound potassium and magnesium ion-stimulated inorganic pyrophosphatase from roots and cotyledons of sugar beet (Beta vulgaris L).

作者信息

Karlsson J

出版信息

Biochim Biophys Acta. 1975 Aug 13;399(2):356-63. doi: 10.1016/0304-4165(75)90264-0.

DOI:10.1016/0304-4165(75)90264-0
PMID:240414
Abstract
  1. The 25 000-30 000 X g fraction from sugar beet leaf or roots contains, together with (Na+ plus K+)-activated ATPase, also K+-stimulated inorganic pyrophosphatase. 2. This inorganic pyrophosphatase is also stimulated by Rb+ and to a lesser degree by Li+ and Na+. 3. Na+ is at the same time an inhibitor to the K+-stimulation of the inorganic pyrophosphatase. 4. No signs of synergism for (Na+ plus K+) were found. 5. Optimum pH was at about 8.5.
摘要
  1. 甜菜叶或根中25000 - 30000X g的组分，除了含有（Na⁺加K⁺）激活的ATP酶外，还含有K⁺刺激的无机焦磷酸酶。2. 这种无机焦磷酸酶也受到Rb⁺的刺激，而受到Li⁺和Na⁺的刺激程度较小。3. Na⁺同时是无机焦磷酸酶K⁺刺激作用的抑制剂。4. 未发现（Na⁺加K⁺）的协同作用迹象。5. 最适pH约为8.5。

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