Endo-1,3(4)-ò-glucanase (, endo-1,3-ò-<small>D</small>-glucanase, laminarinase, ò-1,3-glucanase,4-glucanase, endo-ò-(1âÂÂ3)-<small>D</small>-glucanase, endo-1,3-1,4-ò-<small>D</small>-glucanase, endo-ò-(1-3)-<small>D</small>-glucanase, endo-ò-1,3-glucanase IV, 1,3-1,4)-ò-<small>D</small>-glucan 3(4)-glucanohydrolase) is an enzyme with systematic name 3(or 4)-ò-<small>D</small>-glucan 3(4)-glucanohydrolase. It catalyses the following chemical reaction
Substrates include laminarin, lichenin and cereal <small>D</small>-glucans.