Control of Translational Initiation by mRNA Secondary Structure: A Quantitative Analysis
There is good evidence that mRNA secondary structure is one of the main factors determining the efficiency of translations initiation in prokaryotes (reviewed by Stormo, 1986; Gold, 1988; de Smit & van Duin, 1990). For example, Hall et al. (1982) found that mutations stabilizing a potential hairpin structure in the ribosome binding site of the lamB gene inhibited its expression and this inhibition could be relieved by second-site destabilizing mutations. They further suggested that the level of expression in the different mutants was related to the relative stability of the helix. Similarly, others showed the expression of heterologous genes in E. coli to be related to the stability of defined secondary structures involving the ribosome binding sites (Buell et al., 1985; Tessier et al., 1984; Spanjaard et al., 1989).
KeywordsCodon Polypeptide Galactose Librium Asparagine
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