Fig. 1
Time dependent ATP transport via AtAPC1-3. Transport of 50 μM [α32P]-ATP into Pi (a, c, e) and into ATP (b, d, f) loaded proteoliposomes with reconstituted AtAPC1 (a, b), AtAPC2 (c, d) and AtAPC3 (e, f). ATP uptake was measured in absence (black rhombs) and presence (gray circles) of 500 μM externally applied MgCl2. Non-loaded liposomes (non-filled rhombs; negative control) showed only marginal accumulation of radioactivity and the corresponding rates were unaffected by MgCl2 addition. Data represent mean values of at least three independent replicates, standard errors are given