Difference between revisions of "Part:BBa K4156110"

Revision as of 13:47, 11 October 2022

pPepT-mRFP

pPepT-mRFP is a biological brick that expresses mRFP controlled by the pPepT promoter ( BBa_K4156078 ). pPepT-mRFP functions to characterize the performance of the pPepT promoter using a red fluorescent signal.

Usage and Biology

In this biobrick, we used the pPepT promoter to regulate the expression of downstream mRFP and eventually introduced the rrnB T1 and T7Te dual terminators. In addition, we added the RiboJ sequence and RBS B0034 for optimization. This design allowed the spatiotemporal intensity of gene expression under the regulation of the pPepT promoter to be measured by the red fluorescent signal. We were thus able to verify the specific response of the pPepT promoter to changes in oxygen concentration.

Characterization

hypoxia induced promoter testing

We constructed a hypoxia reporter consisting of the hypoxia-inducible promoter pPepT+mRFP. To test its performance, we added reporter in different chassis organisms.Fig 1 indicates that pPepT induces the expression of the downstream gene mRFP with the decrease of O2. Thus, it can be seen that the hypoxia reporter can work properly.

Sequence and Features