Anandaraj M P, Cherayil J D
Biochem J. 1974 Sep;141(3):647-53. doi: 10.1042/bj1410647.
Chick embryo tRNA, prepared by a simple large-scale method, was fractionated on three different ion-exchange columns. In all cases simple chromatographic patterns for various tRNA species were observed, indicating the presence of only a few major species of tRNA for each amino acid. By repeated chromatography one species of alanine tRNA was purified to approx. 80% purity. T(1) ribonuclease digest of this purified tRNA gave a simple chromatographic pattern. Because of the simplicity of the method of preparation of tRNA from this readily available source and the presence of only a few species of tRNA for each amino acid, chick embryo is suited for the study of tRNA and its various functions in higher systems.
采用一种简单的大规模方法制备的鸡胚tRNA,在三种不同的离子交换柱上进行了分级分离。在所有情况下,均观察到各种tRNA种类的简单色谱图谱,表明每种氨基酸仅存在少数几种主要的tRNA种类。通过反复色谱法,一种丙氨酸tRNA被纯化至约80%的纯度。这种纯化的tRNA经T(1)核糖核酸酶消化后产生简单的色谱图谱。由于从这种容易获得的来源制备tRNA的方法简单,且每种氨基酸仅存在少数几种tRNA种类,鸡胚适合用于研究tRNA及其在高等系统中的各种功能。