Signal amplification of araC pBAD using a standardized translation initiation region.

Publisher:
Oxford University Press (OUP)
Publication Type:
Journal Article
Citation:
Synth Biol (Oxf), 2022, 7, (1), pp. ysac009
Issue Date:
2022
Full metadata record
araC pBAD is a genetic fragment that regulates the expression of the araBAD operon in bacteria, which is required for the metabolism of L-arabinose. It is widely used in bioengineering applications because it can drive regulatable and titratable expression of genes and genetic pathways in microbial cell factories. A notable limitation of araC pBAD is that it generates a low signal when induced with high concentrations of L-arabinose (the maximum ON state). Herein we have amplified the maximum ON state of araC pBAD by coupling it to a synthetically evolved translation initiation region (TIREVOL ). The coupling maintains regulatable and titratable expression from araC pBAD and yet increases the maximal ON state by >5-fold. The general principle demonstrated in the study can be applied to amplify the signal from similar genetic modules. Graphical Abstract.
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