Part:BBa_K3771023

PpspA-CoaBC-6xHis

Description

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

Biology

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 CoaBC. CoaBC converts L-cystate into taurine in the taurine synthesis L-cystate pathway.

Usage

We ligased the coaBC-6xHis fragment and pspA promoter on the pUC expression vector and transformed it into DH5α to complete construction of the plasmid. The 6xHis allows for confirmation of CoaBC expression by western blot using the anti-6xHis antibody.

Characterization

Fig. 2. Colony PCR confirmation of the construction

Reference

1. Darwin AJ. The phage-shock-protein response. Molecular Microbiology. 2005;57(3):621-628. doi:10.1111/j.1365-2958.2005.04694.xhttps://pubmed.ncbi.nlm.nih.gov/16045608/
Sequence and Features

Assembly Compatibility:

• 10
  COMPATIBLE WITH RFC[10]
• 12
  COMPATIBLE WITH RFC[12]
• 21
  INCOMPATIBLE WITH RFC[21]

  Illegal BglII site found at 12
  
• 23
  COMPATIBLE WITH RFC[23]
• 25
  INCOMPATIBLE WITH RFC[25]

  Illegal NgoMIV site found at 727
  
• 1000
  COMPATIBLE WITH RFC[1000]