Financial & competing interests disclosure
This research was supported by grants from the Bio & Medical Technology Development Program of the National Research Foundation (no. 2013035952) and by the Intelligent Synthetic Biology Center of Global Frontier Project funded by the Ministry of Science, ICT & Future Planning (no. 2013M3A6A8073557). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.