FIG. 7.

Comparison of the levels of extracellular ATP or ADP effluxed from growing cultures of S. cerevisiae X2180-1A at pH 4.5 (a) and pH 6.0 (b) before (preaddition) and after (35 and 170 min postaddition) exposure to 17.27 μg of DS s3 (1-16) per ml. Extracellular ATP (▤) or ADP (□) levels during growth in the presence of 17.27 μg of DS s3 (1-16) per ml were compared to the levels of extracellular ATP (■) or ADP (▩) without the presence of the peptide. Representative results of at least two independent experiments are shown.