TABLE 3.

Membrane fluidity of tPMP-1^s and tPMP-1^r S. aureus strains

Strains	Fluorescence polarizationa	Unsaturation indexb (mole−1)
19S	0.022 ± 0.007	0.60 ± 0.09
19R	0.003 ± 0.001c	0.75 ± 0.09
ISP479C	0.021 ± 0.006	0.620 ± 0.02
ISP479R	0.001 ± 0.01d	0.632 ± 0.03
SK982	0.023 ± 0.01	0.17 ± 0.015
SK2355	0.007 ± 0.001c	0.382 ± 0.002

^aThese data represent the means ± standard deviations of 10 independent runs with DPH (measured in fluorescence units). 

^bUnsaturation index = 1 (% monoene)/100 + 2 (% diene)/100 + 3 (% triene)/100 of two independent determinations (means ± standard deviations). 

^cP = 0.002 (for comparisons between strains 19S and 19R and strains SK982 and SK2355). 

^dP = 0.00004 (for comparison between strains ISP479C and ISP479R).