Scherer G F, Walkinshaw M D, Arnott S, Morré D J
Nucleic Acids Res. 1980 Sep 11;8(17):3895-907. doi: 10.1093/nar/8.17.3895.
Oligonucleotide analysis, by a novel computerized procedure, was first applied to determine the sequence of an ideal E. coli promoter (Scherer et al., Nucl. Acids Res. 1978, 5:3759-3773) and has now been used to obtain the sequence of nucleotides that should be present in a messenger RNA for optimum binding to the E. coli ribosome. This sequence is: UU.UUAAAAAUUAAGGAGGUAUAUUAUGAAAAAAAUUAAAAAACUCAA AA U A AUA A CUC G. Comparison of this sequence with each of the 68 ribosome binding site sequences used to generate it shows a preference rather than an absolute requirement for a specific base in any given position. The preference for certain bases persists along the whole length of the RNA within the ribosome binding domain even though nearly half of that length includes translated codons. Thus messages without leader sequences (like lambda CI mRNA) can still have some affinity for the ribosome. Part of the model sequence is complementary to the 3'end of 16S rRNA.
寡核苷酸分析通过一种全新的计算机程序,首次被用于确定理想的大肠杆菌启动子序列(Scherer等人,《核酸研究》,1978年,5:3759 - 3773),如今已被用于获取信使核糖核酸中为实现与大肠杆菌核糖体的最佳结合而应存在的核苷酸序列。该序列为:UU.UUAAAAAUUAAGGAGGUAUAUUAUGAAAAAAAUUAAAAAACUCAAA AA U A AUA A CUC G。将此序列与用于生成它的68个核糖体结合位点序列中的每一个进行比较,结果表明在任何给定位置对特定碱基的偏好而非绝对要求。即使该长度的近一半包含已翻译的密码子,对某些碱基的偏好仍贯穿核糖体结合域内RNA的整个长度。因此,没有前导序列的信使(如λCI信使核糖核酸)仍可对核糖体具有一定亲和力。部分模型序列与16S核糖体RNA的3'端互补。