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肝脏色氨酸加氧酶信使核糖核酸:其部分纯化、在异源无细胞系统中的翻译以及糖皮质激素对其的调控。

Messenger RNA for hepatic tryptophan oxygenase: its partial purification, its translation in a heterologous cell-free system, and its control by glucocorticoid hormones.

作者信息

Schutz G, Beato M, Feigelson P

出版信息

Proc Natl Acad Sci U S A. 1973 Apr;70(4):1218-21. doi: 10.1073/pnas.70.4.1218.

Abstract

Messenger RNA from rat liver was partially purified by chromatography on cellulose on the basis of its poly(A) content. Microgram amounts of this RNA stimulate protein synthesis manyfold in a heterologous cell-free system, derived from Krebs ascites cells supplemented with reticulocyte initiation factors. The messenger RNA directs the initiation, synthesis, and release of a product that was identified as complete subunits of hepatic tryptophan oxygenase (EC 1.13.1.12) by immunoprecipitation with monovalent antibodies prepared against homogeneous tryptophan oxygenase and subsequent sodium dodecyl sulfate-polyacrylamide electrophoresis of the solubilized immunoprecipitate. This may represent the first complete translation in a heterologous system of a mammalian messenger RNA coding for an enzyme protein. Analysis of the messenger RNA content of the liver after glucocorticoid administration demonstrates that the hormonally enhanced rate of synthesis of tryptophan oxygenase is accompanied by an increased quantity of its corresponding messenger RNA.

摘要

大鼠肝脏的信使核糖核酸(mRNA)基于其聚腺苷酸(poly(A))含量,通过在纤维素上进行层析得以部分纯化。微克量的这种RNA能在源自克雷布斯腹水细胞并补充网织红细胞起始因子的异源无细胞体系中,将蛋白质合成刺激许多倍。该信使核糖核酸指导一种产物的起始、合成及释放,通过用针对纯一的色氨酸加氧酶制备的单价抗体进行免疫沉淀,以及随后对溶解的免疫沉淀物进行十二烷基硫酸钠-聚丙烯酰胺凝胶电泳,该产物被鉴定为肝色氨酸加氧酶(EC 1.13.1.12)的完整亚基。这可能代表了在异源体系中首次对编码一种酶蛋白的哺乳动物信使核糖核酸进行完整翻译。对给予糖皮质激素后肝脏信使核糖核酸含量的分析表明,色氨酸加氧酶合成速率的激素增强伴随着其相应信使核糖核酸数量的增加。

相似文献

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The prematurely evoked synthesis of liver tryptophan oxygenase.肝脏色氨酸加氧酶的过早诱发性合成。
Proc Natl Acad Sci U S A. 1971 Aug;68(8):1698-701. doi: 10.1073/pnas.68.8.1698.

引用本文的文献

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Premature induction of hepatic tryptophan oxygenase.过早诱导肝色氨酸加氧酶。
Neurochem Res. 1976 Dec;1(6):591-608. doi: 10.1007/BF00965601.

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Synthesis of myosin on heterologous ribosomes.肌球蛋白在异源核糖体上的合成。
Cold Spring Harb Symp Quant Biol. 1969;34:799-803. doi: 10.1101/sqb.1969.034.01.091.

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