TABLE 1.

Strain list

Name	Genotype	Reference or source
CW2034	ΔvpsL	51
BP20	ΔvpsL ΔVc2	This study
BP25	ΔtfoY	This study
BP33	ΔvpsL Vc2 (G83U)	This study
BP34	ΔvpsL Vc2 (C92U)	This study
BP35	ΔvpsL Vc2 (G20U, C92U)	10
BP41	ΔtfoY (G20U, C92U)	This study