Table 1.

Strains used in this study

Strain	Description	Reference
MM901	M. maripaludis S2 with an in-frame deletion of uracil phosphoribosyltransferase	1
MM1264	MM901 with a 6× His tag on HdrB2	1
MM1265	MM901 ΔfdhA2B2 with a 6× His tag on FdhA1	1
MM1272	MM901 ΔvhuAU ΔvhcA	1
MM1313	MM901 ΔvhuAU ΔvhcA ΔfruA ΔfrcA	4