Multimenic lectins having a β-propeller architecture, formed from monomer modules of approximately 30 to 60 amino acids, in which the binding sites to the glycans are situated on a given side of the proteins and the O-terminus and N-terminus ends of the peptide chains on the other side of the proteins, characterized in that they are formed from 4 to 7 monomer modules, a single, or a plurality of, or all of the adjacent modules being linked to one another by the linkers linking the N-terminus end of one module to the C-terminus end of the adjacent module.