Tr. Transue et al., STRUCTURE OF BENZYL T-ANTIGEN DISACCHARIDE BOUND TO AMARANTHUS-CAUDATUS AGGLUTININ, Nature structural biology, 4(10), 1997, pp. 779-783
Amaranthus caudatus agglutinin contains a novel arrangement of four be
ta-trefoil domains. The sugar-binding site provides specificity for th
e carcinoma-associated T-antigen disaccharide even when 'masked' by ot
her sugars.