Heywood S M, Kennedy D S, Bester A J
Proc Natl Acad Sci U S A. 1974 Jun;71(6):2428-31. doi: 10.1073/pnas.71.6.2428.
Two messenger specific factors, phosphocellulose fractions 3 and 4, have been isolated from the initiation factor 3 fraction of red muscle initiation factors by chromatography on phosphocellulose. When added to a reticulocyte cell-free system containing both myoglobin and myosin mRNAs, phosphocellulose fraction 3 is found to specifically stimulate the synthesis of myoglobin while phosphocellulose fraction 4 is found to specifically stimulate the synthesis of myosin. In addition, a new RNA, isolated from the initiation factor 3 fraction, is shown to specifically inhibit the translation of heterologous mRNAs.
通过磷酸纤维素柱层析,从红色肌肉起始因子的起始因子3组分中分离出了两种信使特异性因子,即磷酸纤维素组分3和4。当将磷酸纤维素组分3添加到含有肌红蛋白和肌球蛋白mRNA的网织红细胞无细胞体系中时,发现它能特异性地刺激肌红蛋白的合成;而当将磷酸纤维素组分4添加到该体系中时,则发现它能特异性地刺激肌球蛋白的合成。此外,从起始因子3组分中分离出的一种新RNA,被证明能特异性抑制异源mRNA的翻译。