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. 1989 Jul;171(7):4080–4082. doi: 10.1128/jb.171.7.4080-4082.1989

mRNA secondary structure in an open reading frame reduces translation efficiency in Bacillus subtilis.

M Kubo 1, T Imanaka 1
PMCID: PMC210167  PMID: 2500423

Abstract

The structural gene for thermostable neutral protease, nprM, has only one stacking region, whose energy is -16.3 kcal/mol (-68.2 kJ/mol). Mutations for increasing (-30.8 kcal/mol [128.9 kJ/mol] and decreasing (-5.0 kcal/mol [-20.9 kJ/mol]) the energy of the stacking region were introduced in nprM on the recombinant plasmid pMK1 by using site-directed mutagenesis without any amino acid substitutions. The resultant plasmids were designated pMK2 and pMK3, respectively. The enzyme productivity of the pMK2 carrier was about 40% lower than that of pMK1, whereas the productivity of the pMK3 carrier was about 5% higher. The higher the stability of the stacking regions, the lower the enzyme productivity that was observed. mRNA concentrations were almost the same in the cells harboring these three plasmids. These results indicate that the secondary structure of mRNA reduces the translation efficiency.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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