FIG. 1.
(A) Phosphate uptake by CW04 cells during growth (□) in LPi medium. At specified time intervals, samples were withdrawn and assayed for inorganic phosphate uptake (○), and the supernatants were used for glucose (▴) and phosphate (⧫) determination. (B) Intracellular levels of inorganic phosphate (I), polyphosphate (II), and ATP (III) in CW04 cells grown in HPi medium (hatched bars) and LPi medium (solid bars) and harvested after 5 and 10 h of growth determined by 31P NMR spectroscopy. The standard deviations of the values shown are 1 to 3%.