... presented by a mixture of clo-sely related isoforms. In the present study, four pulchel-lin isoforms were isolated, and their amino acidssequences deduced by cDNA cloning and verified by MS. Half ... discussed.ResultsNomenclature of the toxic pulchellin lectinsThe abbreviation P is followed by the Roman numer-als I, II, III and IV and refers to each pulchellinisoform (P I, P II, P II and P IV). The A-chain of P ... weight markers. Numbers on the left indicate the Mrvalues of the standards in thousands. Lanes 2–9, 5 lg of peakP I, P II, P III ⁄ P IV and a mixture of other isoforms (*), respec-tively, in...