Figure 3.

BL Binding Is Diminished in cu3 Microsomal Fractions.

Mature tomato wild-type and cu3 leaves of mature plants were used to assess [³H]-BL binding in vivo. Microsomal extracts from fresh tissues were incubated in 2, 10, 25, 50, 75, or 100 nM [³H]-BL. Specific [³H]-BL binding is reduced in the cu3 microsomal extracts compared with the wild type. Data represent the average measurements of three independent experiments. Error bars indicate se of the mean.