Role of N-terminal His-rich Domain of Oscillatoria brevis Bxa1 in Both Ag(I)/Cu(I) and Cd(II)/Zn(II) Tolerance

Table 1.: Influx and Efflux of Cd in the Three Yeast Transformants

Strain	Cd Content at 0 h (ng/10D₆₀₀)	Cd Content at 3 h (ng/10D₆₀₀)^a	Cd Content at 6h (ng/10D₆₀₀)^b	Relative Cd Content (a-b)/a (%)^c
pYES2 TF	1.7±1.0	94.7±11.2	42.1±6.5	55.5
bxa1 TF	0.6±0.1	77.3±5.4	64.6±9.5	16.4
Δ35bxa1 TF	0.7±0.1	97.1±17.8	46.9±5.2	51.7

Cd content were measured from three independent experiments and shown as the mean ±SE.

^a Cd content after 10 􀀁M Cd treatment for 3 h as a uptake period.

^b Cd content after non Cd treatment for 3 h as a release period.

^c Relative Cd content (%) was calculated from the formula shown above.