Galactose-binding protein which recognizes specific carbohydrate structures and agglutinates a variety of animal cells by binding to cell-surface glycoproteins and glycolipids. Calcium-dependent lectin. Shows high hemagglutinating activity (MHC=10 ng/ml) (PubMed:1989986). Homodecamer of disulfide-linked dimers arranged in two pseudo-5-fold symmetric pentamers. Expressed by the venom gland. Average mass. Belongs to the true venom lectin family.