... susceptible insects In this work, we characterized the binding of PA1b to a proteinaceous component of a particulate fraction of S oryzae extracts The binding was saturable and reversible, and the binding ... absence of the molecular target Indeed, the absence of binding in resistant strains could be due to the absence of the target protein, or to a mutation within the site of the binding to PA1b Actually, ... tubes The radioactivity was counted on a gamma counter (Riastar, Packard Instrument, USA), and each point was the mean of triplicates Binding data were analyzed using the RADLIG software (BIOSOFT,...