The enzyme hydrolyses the second glycosidic (1¡ú4) linkage from non-reducing ends of chitin and chitodextrin molecules, liberating?N,N’-diacetylchitobiose disaccharides.?cf. EC?3.2.1.201, exo-chitinase (reducing end).
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Hydrolysis of N,N’-diacetylchitobiose from the non-reducing end of chitin and chitodextrins.