Table 1.

Strains used in this study

Strain	Description	Ref.
H26	ΔpyrE2	(43)
H729	ΔhdrB	(19)
HAN12	ΔpyrE2 Δintein	(21)
HAN17	ΔpyrE2 ΔtrpA Δintein	This study
HAN24	ΔhdrB Δintein	This study
H53	ΔpyrE2 ΔtrpA	(43)
UG417	HAN17 Hvo00894::pTA131	This study