ATP-DEPENDENT GOLD ACCUMULATION BY LIVING CHLORELLA CELLS

An effect of the Au(III) energy dependent concentration has been discovered by living Chlorella cells. The process is most intensive within the alkaline interval of pH, fading away in the dark, and is suppressed in the presence of arsenate (C greater-than-or-equal-to 1-mu-M), fluorides (C greater-than-or-equal-to 0.01 mM), sodium azide (1 mM), DCCD (10-mu-M), 2,4-dinitrophenol (0.1 mM). In the dark the process is stimulated by ATP (but not by ADP, or AMP). ATP also neutralizes NaN3 effect, but not that of DNP. An energy dependent Au(III) concentration is also observed for other green, blue-green, and, red single-cell algae.