THE PERMEABILITY OF YEAST CELLS TO RADIOPHOSPHATE

¹ Department of Zoology, University of California, Berkeley, and Department of Physiology, University of Rochester, School of Medicine and Dentistry, Rochester

The data presented indicate that the transfer of phosphate across the yeast cell membrane is dependent almost entirely on the carbohydrate metabolism of the cell. A maximum quantity of phosphorus is transferred into the cell when high external carbohydrate concentration is maintained and when the temperature is held at 37° C. The presence or absence of oxygen is not very important in promoting phosphorus transfer. Very little phosphorus will diffuse into yeast at 10° C. in the absence of sugar.

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