“…The Kunitz-type proteinase inhibitors have molecular weights of $20 kDa and normally only two disul®de bridges. The Kunitz soybean trypsin inhibitor (Koide & Ikenaka, 1973), the inhibitors from Erythrinia caffra (Joubert & Dowdle, 1987), winged bean (Psophocarpus tetraganolobus; Yamamoto et al, 1983), the seeds of Albizzia jubibrissin (Odani et al, 1979), Erythrina latissima (Joubert et al, 1981) and Acacia elata (Kortt & Jermyn, 1981) are members of this family.…”