Involved in mycoparasitism, hydrolyzes yeast and fungal cell walls. Classified as a small-oligosaccharide-producing type based its the end products: glucose, laminaribiose or laminaritetraose. Hydrolysis of (1->3)-beta-D-glucosidic linkages in (1->3)-beta-D-glucans. Inhibited by glucose. Optimum temperature is 40 degrees Celsius. Inactive at 55 degrees Celsius. The C-terminal cysteine-rich region may function as a fungal cell wall binding domain. Does not seem to be glycosylated. Belongs to the glycosyl hydrolase 55 family.