... 1996 of lepidopteran-insect-resistant cotton in the USA [7]. The expression of an insecticidal protein in plants presents many advan-tages over the exogenous application of chemicals. The “toxin,” ... 9C), and the promoter associ-ated with the coding sequence (which affects the quantity and location of the Cry protein). In 1999, 30 percent of the cultivated area in the USAconsisted of transgenic ... on the protease content of the gut of differentColeoptera have shown the presence of cysteine proteases, which, in manycases, represent the major class of digestive proteases [33]. The cDNA of OC-I,...