Table 1.

Viability of haploid lptD Cys mutants in LB

Single*	Growth	Double*	Growth	Triple*	Growth	Quadruple*	Growth
CCCC	+	SSCC	−	SSSC	−	SSSS	−
SCCC	+	SCSC	+	SSCS	−
CSCC	−	SCCC	−	SCSS	−
CCSC	+	CSSC	−	CCCS	−
CCSC	+	CSCS	+
		CCSS	−

*Amino acids present at positions 31, 173, 724, and 725 of LptD.