9. Substrate specificity of the purified solanain from the latex of Vallaris solanacea

Plant lattices are rich source of proteases. Latex of Vallaris solanacea also showed high protease activity. The cysteine protease solanain was purified by ammonium sulphate precipitation followed by DEAE-cellulose ion exchange and gel chromatography. The purpose of the present study is determination of specificity of purified solanain towards synthetic peptide and ester substrates. Extensive and more systematic studies [13–16] have been made on papain, ficin [17] and bromelain [18].
