Galactose-binding lectin which recognizes specific carbohydrate structures and agglutinates a variety of animal cells by binding to cell-surface glycoproteins and glycolipids. This is a calcium-dependent lectin (PubMed:8593494). Shows high hemagglutinating activity (MHC is 0.25 ug/ml on rabbit erythrocytes) (PubMed:10484740). Homodimer; disulfide-linked. Expressed by the venom gland. Belongs to the true venom lectin family.