A sulfated proteoglycan from the red alga Gracilaria verrucosa is a hemagglutinin.

@article{Kanoh1992ASP,
  title={A sulfated proteoglycan from the red alga Gracilaria verrucosa is a hemagglutinin.},
  author={Hiroyuki Kanoh and Tomohide Kitamura and Yuichi Kobayashi},
  journal={Comparative biochemistry and physiology. B, Comparative biochemistry},
  year={1992},
  volume={102 3},
  pages={445-9}
}
1. A novel hemagglutinin was isolated from the red alga Gracilaria verrucosa and characterized as a sulfated proteoglycan with 92% carbohydrate content. 2. It is a dimer (MW 27,000 and MW 23,000); its molecular weight (MW) and isoelectric point are 49,000 and 3.8, respectively. 3. It agglutinates rabbit greater than horse greater than guinea pig greater than goose erythrocytes. 4. This activity is sensitive to heat, but insensitive to protease or periodate. It is not inhibited by simple sugars… CONTINUE READING