Fig. 1. Protein elution profile (solid line) and CP activity (shaded line) after ionic and affinity chromatography. (A) Carboxymethyl-Sepharose fractionation of acid dialysis. Fractions were eluted increasing ionic strength (NaCl). 1, 2 and 3 represent the major peaks of CP activity. (B) p-chloromercuribenzoate (p-CMB)-agarose fractionation of pool 3. Elution was done with 20 mM L-cysteine in 50 mM Na-acetate/acetic acid buffer pH 5.0 (Buffer A) containing 0.2MNaCl and 5.0mMEDTA (arrow). (C) SDS-PAGE 12.5%, and Coomassie Blue R-250 stained gel of SmCB1-enriched fraction