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Table 4 Stimulus-induced Ca2+-influx in LvsA-and DH1. Ca2+-influx was determined with a Ca2+-sensitive electrode before and after addition of cAMP or AA at an extracellular Ca2+-concentration of 2–3 μM. Data are means ± SD. The number of independent experiments is given in brackets.

From: The contractile vacuole in Ca2+-regulation in Dictyostelium: its essential function for cAMP-induced Ca2+-influx

 

Ca2+-influx pmol/107 cells

Stimulus (μM)

LvsA-

DH1

cAMP 0.1

< 0.1 (7)

nd

1

< 0.1 (7)

100 ± 59 (3)

10

1 ± 5 (9)

203 ± 107 (3)

20 – 50

50 ± 1 (2)

nd

AA 10

< 0.1 (7)

70 ± 13 (3)