FIG. 3.

Synthesis of AR1 in infected pumpkin plants. Shown are Western blots of AR1 synthesized by each class III AR1 mutant, as indicated above each lane, when coinoculated onto pumpkin with wild-type SqLCV B. Proteins were extracted from the first true leaf at 12 days following inoculation of cotyledons. WT, wild-type SqLCV A component. Sizes of protein molecular mass standards (in kilodaltons) are indicated on the left.