Metabolism of [3H]tasidotin by CA46 Burkitt lymphoma cells over
time. Cells were incubated for the indicated times with 1.0 μM
[3H]tasidotin, and soluble radiolabel was evaluated by HPLC and
flow detector analysis. Radiolabel in the three peaks was quantitated at each
time point, as indicated by the following symbols: ▿, tasidotin; ▵,
P5; and ○, proline. Three independent experiments were performed, and
standard deviations are indicated.