Table 2.

Bacterial strains.

Strain	Genotype	Comments	Reference
S. lividans 66	SLP2+ SLP3+ Wild type.	Parental strain of the pstS mutant.	[1]
S. lividans ΔpstS	SLP2+ SLP3+ ΔpstS	Mutant defective in the high-affinity phosphate protein PstS.	[6]
S. lividans TK24	str-6 SLP2- SLP3- Wild type.	Parental strain of phoP mutant.	[1]
S. lividans ΔphoP	str-6 SLP2- SLP3-ΔphoP	Mutant defective in the regulator of the two-component system PhoP/R.	[27]
E. coli DH5α	F-, ϕ 80 d lacZΔM15, Δ(lacZYA-argF)U169, recA1, endA1, hsdR17(rk-, mk+), supE44, λ-, thi-1, gyrA, relA1	Used for cloning and plasmid isolation.	[28]