Name	Genotype
pBRmetL–pNrhtA	metL, PN25-rhtA
pBRmetL–rhtA23	metL, PrhtA-rhtA23
pBRmetL–rhtA	metL, PrhtA-rhtA
pKKpNrhtA	PN25-rhtA
pR1	PrhtA-rhtA
pR2	PN25-rhtA