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Cell-free translation reconstituted with purified components


We have developed a protein-synthesizing system reconstituted from recombinant tagged protein factors purified to homogeneity. The system was able to produce protein at a rate of about 160 μg/ml/h in a batch mode without the need for any supplementary apparatus. The protein products were easily purified within 1 h using affinity chromatography to remove the tagged protein factors. Moreover, omission of a release factor allowed efficient incorporation of an unnatural amino acid using suppressor transfer RNA (tRNA).

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We thank S. Yokoyama, The University of Tokyo, for providing the expression plasmid encoding the ArgRS gene. This work was supported by a grant (JSPS-RFTF 96100306) from The Japan Society for the Promotion of Science (to T.U.).

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Shimizu, Y., Inoue, A., Tomari, Y. et al. Cell-free translation reconstituted with purified components. Nat Biotechnol 19, 751–755 (2001).

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