A significant challenge in the field of in vitro synthetic biology is the construction of a self-reproducing cell-free translation system, which reproduces its components, such as translation proteins, through translation and transcription by itself. As a first step for such construction, in this study we expressed and evaluated the activity of 20 aminoacyl-tRNA synthetases (aaRSs), a major component of a translation system, in a reconstituted translation system (PURE system). We found that 19 aaRS with the exception of phenylalanyl-tRNA synthetase (PheRS) are expressed as soluble proteins and their activities are comparable to those expressed in Escherichia coli This study provides basic information on the properties of aaRSs expressed in the PURE system, which will be helpful for the future reconstitution of a self-reproducing translation system.
Awai, T., Ichihashi, N., & Yomo, T. (2015). Activities of 20 aminoacyl-tRNA synthetases expressed in a reconstituted translation system in Escherichia coli. Biochemistry and Biophysics Reports, 3, 140–143. https://doi.org/10.1016/j.bbrep.2015.08.006