3.2.1.26 raffinose + H2O = beta-D-fructofuranose + 6-O alpha-D-galactopyranosyl-alpha-D-glucopyranose - 3.2.1.26 raffinose + H2O = beta-D-fructofuranose + 6-O alpha-D-galactopyranosyl-alpha-D-glucopyranose double-displacement reaction mechanism, cleavage of beta-fructopyranosidic linkages involving a nucleophilic aspartate and a catalytic glutamic acid acting as general acid/base, structure of the active site substrate binding pocket possessing three binding subsites 3.2.1.26 raffinose + H2O = beta-D-fructofuranose + 6-O alpha-D-galactopyranosyl-alpha-D-glucopyranose the enzyme reaction mechanism with retention of the anomeric configuration at the site of cleavage, active site structure 3.2.1.26 raffinose + H2O = beta-D-fructofuranose + 6-O alpha-D-galactopyranosyl-alpha-D-glucopyranose the enzyme shows also transfructosylation activity with cellobiose or cellotriose as acceptor and sucrose as donor, mechanism