Lectin with specificity for complex N-linked glycans and O-linked glycans. Has hemagglutinating activity towards rabbit erythrocytes that is inhibited by N-acetyl-D-galactosamine. The N-terminus is blocked. Contains seven disulfide bonds. Proteolytically cleaved. Major form may consist of cleaved, disulfide-bonded subunits. 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 subunit. The measured mass is that of the reduced and carbamidomethylated C-terminal subunit.