Glucodextranase N <p>Glucodextranase domain N, uniquely found in bacterial and archaeal glucoamylases and glucodextranases, adopts a structure consisting of 17 antiparallel beta-strands. These beta-strands are divided into two beta-sheets, and one of the beta-sheets is wrapped by an extended polypeptide, which appears to stabilise the domain. This domain, together with glycoside hydrolase domain A (<db_xref db="INTERPRO" dbkey="IPR011613"/>), is mainly involved with catalytic activity, hydrolysing alpha-1,6-glucosidic linkages of dextran to release beta-D-glucose from the non-reducing end via an inverting reaction mechanism [<cite idref="PUB00031762"/>]. </p>