MAKING A FITTING CHOICE - COMMON ASPECTS OF SUGAR-BINDING SITES IN PLANT AND ANIMAL LECTINS

Comparing sequences of plant and animal lectins reveals that the abili ty to bind any one type of sugar has evolved several times independent ly in diverse protein frameworks. Conversely, families of lectins that share common structural features often contain members that recognize different groups of sugars. In the context of this combination of con vergent and divergent evolution, our knowledge of the structures of le ctin-sugar complexes provides valuable insights into the principles th at underlie specific sugar binding.