Hynes N E, Phillips S L
J Bacteriol. 1976 Feb;125(2):595-600. doi: 10.1128/jb.125.2.595-600.1976.
We examined the kinetics of incorporation of [3H]adenine into polyadenylate-containing ribonucleic acid [poly(A)-containing RNA] in yeast. The total poly(A)-containing RNA from spheroplasts and intact cells and the polysomal poly(A)-containing RNA exhibited similar incorporation kinetics. At 30 C half-saturation of the pool of poly(A)-containing RNA with label occurred in approximately 22 min. Since precursor pools appeared to require 5 min to saturate with label, we conclude that at 30 C messenger RNA molecules in yeast decay with an average half-life of 17 min.
我们研究了[3H]腺嘌呤掺入酵母中含聚腺苷酸的核糖核酸(含poly(A)的RNA)的动力学。来自原生质球和完整细胞的总含poly(A)的RNA以及多核糖体含poly(A)的RNA表现出相似的掺入动力学。在30℃时,含poly(A)的RNA池被标记半饱和大约发生在22分钟。由于前体池似乎需要5分钟才能被标记饱和,我们得出结论,在30℃时,酵母中的信使RNA分子平均半衰期为17分钟。