Table 3. Energy-dependence of the uptake of L-[3H]carnitine
by HCLE or HCjE cells at pH 7.5 and 37 °C.
Relative uptake (% of control)
HCLE or HCjE cells were pre-incubated for 30 min in uptake buffer
containing 10 mM of sodium azide, dinitrophenol or iodoacetic acid; L-[3H]carnitine
(24 nM) was then added and the incubation continued for 30 min. Each
value is the percentage uptake of L-[3H]carnitine in medium
containing sodium azide, dinitrophenol, or iodoacetic acid compared
with that in control medium without these compounds. Values are the
mean±SD of results from four experiments.