Lectins can be classified into seven families of structurally and
carbohydrate-binding proteins, including (1) the amaranthins, (2)
the cucurbitaceae phloem lectins, (3) the chitin binding lectins
composed of hevein domains, (4) the GNA-related lectins, (5) the
jacalin-related lectins, (6) the legume lectins and (7) the lectins
with ricin-B domains