Galactose-binding protein which recognizes specific carbohydrate structures and agglutinates a variety of animal cells by binding to cell-surface glycoproteins and glycolipids. Is a calcium-dependent lectin. Shows high hemagglutinating activity, that is inhibited by lactose, galactose and inositol. Homodimer; disulfide-linked. Expressed by the venom gland. Belongs to the true venom lectin family.