Probable glucan endo-1,3-beta-glucosidase involved in the hydrolysis of fungal cell wall (By similarity). Classified as a small-oligosaccharide-producing type based its the end products: glucose, laminaribiose or laminaritetraose (By similarity). Hydrolysis of (1->3)-beta-D-glucosidic linkages in (1->3)-beta-D-glucans. Belongs to the glycosyl hydrolase 55 family.