Lectin with specificity for complex N-linked glycans and O-linked glycans. Has hemagglutinating activity towards rabbit erythrocytes. The N-terminus is blocked. Contains seven disulfide bonds. Proteolytically cleaved. Major mature form may consist of cleaved, disulfide-bonded N-terminal and C-terminal chains. The measured mass is that of the native single chain. The measured mass is that of the reduced and carbamidomethylated single chain. The measured mass is that of the reduced and carbamidomethylated N-terminal chain. The measured mass is that of the reduced and carbamidomethylated C-terminal chain.