A rapid and convenient assay for adenylyl(2' leads to 5')adenosine(A2'p5'A) or adenylyl(3' leads to 5')adenosine(A3'p5'A) phosphodiesterase activities is described. The dinucleotides A3'p5'A and A2'p5'A were labeled to a high specific activity by means of a catalytic-exchange procedure. Degradation
Analysis of 2′,5′-oligoadenylates in cells and tissues
✍ Scribed by Tony R. Reid; Carol Lipsey Hersh; Ian M. Kerr; George R. Stark
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 498 KB
- Volume
- 136
- Category
- Article
- ISSN
- 0003-2697
No coin nor oath required. For personal study only.
✦ Synopsis
Complex mixtures of 2',5'-oligoadenylates are formed in cells and tissues under several different circumstances, and methods for analyzing such mixtures are reviewed. Separation is achieved by high-performance liquid chromatography and quantitation by competition-binding assays, using three different types of antibodies or a specific binding protein, or by functional assay, using preparations of an endonuclease specifically activated by some of the 2',5'-oligoadenylates. Representative results from three different biological systems are presented. The function of 2',5'-oligoadenylates as activators of intracellular RNA degradation is discussed, along with the possibility that these compounds may serve as signals for other intracellular regulatory processes.
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