Agarose and Related Polysaccharides

6- anhydro-a-L-galactosyl residues are thus termed /3-D-agarase (EC 3.2.1.81), but an enzyme active on the -l-(1 - 3) linkage between the 

6- anhydro-a-L-galactosyl and the D-galactosyl residue (a-L-agarase) has also been reported.156 Substitution of the disaccharide unit with an O-sulfo or a pyruvic acetal group interferes with the reaction. 

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