TABLE 4.

Amount of gold bound^a

Prepn	Amt of gold bound (μmol/mg [dry wt] of cells)
	Replicate 1b	Replicate 2	Replicate 3	Mean
P. aeruginosa PAO1 (A+ B+)	0.430 ± 0.009	0.388 ± 0.050	0.417 ± 0.019	0.412 ± 0.022
P. aeruginosa AK1401 (A+ B−)	0.532 ± 0.058	0.562 ± 0.032	0.522 ± 0.056	0.539 ± 0.021d
P. aeruginosa dps89 (A− B+)	0.592 ± 0.016	0.524 ± 0.017	0.527 ± 0.055	0.548 ± 0.038d
P. aeruginosa rd7513 (A− B−)	0.410 ± 0.035	0.446 ± 0.010	0.425 ± 0.061	0.427 ± 0.018
Acellular controlc	0	0	0	0

^aWhole cells were treated with a 1 mM solution of AuCl₃ for 15 min at 22°C. 

^bData are values from separate measurements of three whole-cell–metal interactions. 

^cAmount of metal which precipitated chemically during the 15-min treatment period. 

^dThe values for AK1401 and dps89 are significantly different from the values for rd7513 and PAO1.