Glucan 1,3-α-glucosidase

{{Infobox enzyme

| Name = Glucan 1,3-α-glucosidase

| EC_number = 3.2.1.84

| CAS_number = 9073-99-8

| GO_code =

| image =

| width =

| caption =

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Glucan 1,3-α-glucosidase ({{EnzExplorer|3.2.1.84}}, exo-1,3-α-glucanase, glucosidase II, 1,3-α-D-glucan 3-glucohydrolase) is an enzyme with systematic name 3-α-D-glucan 3-glucohydrolase.{{cite journal | vauthors = Zonneveld BJ | title = A new type of enzyme, and exo-splitting -1,3 glucanase from non-induced cultures of Aspergillus nidulans | journal = Biochimica et Biophysica Acta | volume = 258 | issue = 2 | pages = 541–7 | date = February 1972 | pmid = 4622000 | doi = 10.1016/0005-2744(72)90245-8 }} It catalyses the hydrolysis of terminal (1→3)-α-D-glucosidic links in (1→3)-α-D-glucans.

It does not act on nigeran although it has some activity against nigerose.