RNA
Part:BBa_K3328008:Experience
Designed by: Chaoxin Chen Group: iGEM20_OUC-China (2020-10-03)
Toehold switch is composed of cis-acting element RNA hairpins and trans-acting factor trigger RNA. The binding of a trigger RNA to the toehold sequence allows for a branch migration process, exposing AUG and RBS for translation initiation.
Applications of BBa_K3328013
Compared with the blank control (IPTG=0 M, aTc=0 mg/ml), the fluorescence of GFP was low when only the promoter before toehold sequence was turned on (IPTG=0.1 M, aTc=0 mg/ml). This indicates that the toehold has the advantage of low leakage. When the trigger was expressed (IPTG=0.1 M, aTc=0.25 mg/ml), it showed a high GFP fluorescence of up to 32.3-fold due to the destruction of toehold hairpin structure.
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