Efficient suppression of the amber codon in E. coli in vitro translation system
Open Access
- 14 March 2005
- journal article
- Published by Wiley in FEBS Letters
- Vol. 579 (10), 2156-2160
- https://doi.org/10.1016/j.febslet.2005.03.004
Abstract
An mRNA encoding the esterase from Alicyclobacillus acidocaldarius with catalytically essential serine codon (ACG) replaced by an amber (UAG) codon was used to study the suppression in in vitro translation system. Suppression of UAG by tRNASer(CUA) was monitored by determination of the full‐length and active esterase. It was shown that commonly used increase of suppressor tRNA concentration inhibits protein production and therefore limits suppression. In situ deactivation of release factor by specific antibodies leads to efficient suppression already at low suppressor tRNA concentration and allows an in vitro synthesis of fully active enzyme in high yield undistinguishable from wild‐type protein.Keywords
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