Table 1.

Bacterial strains and plasmids used in this study and their source

Strain	Source
BL21(DE3)	Sigma Aldrich
BL21(DE3)omp8	Prilipov et al30.
pY03	Thoma et al46.
pY27	This study
pY161	This study
pYOX	This study
pY191	This study