Tests

Damage tolerance assay

To measure the DNA damage tolerance conferred by each part, we used UV irradiation as a source of DNA damage and then assayed the survival rates. Transformed E. coli cells were plated on agar plates at different dilutions, air dried, and then exposed to different doses of UV radiation. Plates were wrapped with aluminum foil and incubated in the dark. Colony-forming units were scored after 16h incubation at 37°C. For detailed protocols, refer to the Protocols page.

The results will be up soon!

SOS promoter assay

We assayed the promoter of the SOS gene RecA ([http://partsregistry.org/wiki/index.php?title=Part:BBa_J22106 J22106]), by attaching a lycopene biosynthesis gene cluster ([http://partsregistry.org/Part:BBa_K274100 K274100]) downstream as a reporter to yield the DNA damage detection device ([http://partsregistry.org/Part:BBa_K602013 K602013]). Transformed E. coli was exposed to UV light and then incubated for 2 hours. Lycopene as a reporter was extracted from cells with acetone. For details check the Protocols page.

The results will be up soon!