Difference between revisions of "Part:BBa K3771045"

Revision as of 16:02, 17 October 2021

PpspA-CDO1-pOmpA-OmpA/OprF

Description

This composite part is a component of the IFN-γ sensing system and was used to express the taurine production enzyme, CDO1.

Biology

The ompA promoter facilitates the constitutive expression of OmpA/OprF. Binding of IFN-γ to the OmpA/OprF chimeric protein induces the response of the phage shock protein (Psp) system, a highly conserved stress response system in enterobacteria. [1] Signal transduction from the outer membrane to the inner membrane activates the pspA promoter, initiating expression of CDO1. CDO1 converts L-cysteine into L-cysteine sulfonic acid in the taurine synthesis L-cysteine sulfinic acid pathway [2].

Usage

We ligased the P_ompA-ompA/oprF fragment and P_pspA-cdo1 on the pSU expression vector and transformed it into DH5α to complete construction of the plasmid.

Characterization

Double digestion results are shown in Fig. 2.

Reference

1. Darwin AJ. The phage-shock-protein response. Molecular Microbiology. 2005;57(3):621-628. doi:10.1111/j.1365-2958.2005.04694.x https://pubmed.ncbi.nlm.nih.gov/16045608/
2. Joo Y-C, Ko YJ, You SK, et al. Creating a New Pathway in Corynebacterium glutamicum for the Production of Taurine as a Food Additive. Journal of Agricultural and Food Chemistry. 2018;66(51):13454-13463. doi:10.1021/acs.jafc.8b05093 https://pubmed.ncbi.nlm.nih.gov/30516051/

Sequence and Features