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TLC of the hydrolysis products of digalacturonic acid (G2), trigalacturonic acid (G3), and polygalacturonic acid (PG) with the purified rPelA. The reaction mixtures contained 50 mM Tris⋅HCl (pH 8), 0.05 mM CaCl2, 5 units of enzymatic activity/ml, and 1 mg of the substrates/ml. Incubations were performed at 37°C for 12 h after the addition of rPelA or without enzyme.
