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一种光亲和性ATP类似物与人红细胞膜阳离子刺激的三磷酸腺苷酶的相互作用。

Interactions of a photo-affinity ATP analog with cation-stimulated adenosine triphosphatases of human red cell membranes.

作者信息

Haley B E, Hoffman J F

出版信息

Proc Natl Acad Sci U S A. 1974 Sep;71(9):3367-71. doi: 10.1073/pnas.71.9.3367.

Abstract

To identify and isolate ATP binding and hydrolyzing sites of human red cell membranes we have synthesized a photo-activated ATP analog, 8-azido adenosine triphosphate (N(3)ATP). In the absence of ultraviolet light it is a substrate for both the Mg-ATPase and the ouabain-sensitive, Na,K-ATPase. Hydrolysis of N(3)ATP is prevented by increasing concentrations of ATP. Photolysis of N(3)ATP with red cell membranes results in covalent incorporation and irreversible inhibition of both ATPase activities. Also, only three protein components of the red cell membranes are labeled. This labeling is completely abolished by appropriate concentrations of ATP.

摘要

为了鉴定和分离人红细胞膜的ATP结合与水解位点,我们合成了一种光活化的ATP类似物,即8-叠氮腺苷三磷酸(N(3)ATP)。在没有紫外线的情况下,它是镁-ATP酶和哇巴因敏感的钠钾-ATP酶的底物。ATP浓度增加可阻止N(3)ATP的水解。N(3)ATP与红细胞膜进行光解反应会导致共价结合并对两种ATP酶活性产生不可逆抑制。此外,红细胞膜中只有三种蛋白质成分被标记。适当浓度的ATP可完全消除这种标记。

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Membrane ATP and the functional organization of the red cell Na:K pump.膜ATP与红细胞钠钾泵的功能组织
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引用本文的文献

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Affinity labeling of Avena phytochrome with ATP analogs.用 ATP 类似物对燕麦光敏色素进行亲和标记。
Proc Natl Acad Sci U S A. 1989 May;86(10):3469-73. doi: 10.1073/pnas.86.10.3469.

本文引用的文献

1
PHOSPHATE INCORPORATION AND NA, K-ATPASE ACTIVITY IN HUMAN RED BLOOD CELL GHOSTS.
J Cell Comp Physiol. 1965 Feb;65:31-43. doi: 10.1002/jcp.1030650106.
2
SYNTHESIS OF NUCLEOTIDE ANHYDRIDES BY ANION EXCHANGE.通过阴离子交换合成核苷酸酐。
Biochim Biophys Acta. 1964 Sep 11;91:1-13. doi: 10.1016/0926-6550(64)90164-1.
8
The control of membrane-bound Ca 2+ by ATP.ATP对膜结合Ca²⁺的调控。
Biochim Biophys Acta. 1971 Aug 13;241(2):473-82. doi: 10.1016/0005-2736(71)90046-0.
10
The mechanism of photoaffinity labeling.光亲和标记的机制。
Proc Natl Acad Sci U S A. 1973 Sep;70(9):2567-71. doi: 10.1073/pnas.70.9.2567.

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