Hemagglutinins from the green algae, Chlorophyta

The extracts from 30 species of the green algae were examined for hemagglutination activity with a variety different animal and human erythrocytes which untreated treated enzymes. Almost all showed at least toward one type tested. Strong was detected in 5 Chlorophyta (Anadyomene plicata, Avrainvillea erecta, Boodlea struveoides, Halimeda velasquezii discoidea) enzyme-treated rabbit sheep erythrocytes. hemagglutinins some active carbohydrate binding specificity, pH temperature stability, effect divalent cation on their activities. All had no affinity monosaccharides, except hemagglutinin Codium arabicum whose activities inhibited by N-acetyl-D-galactosamine N-acetyl-D-glucosamine. On other hand, glycoproteins. inhibition profiles glycoproteins different, depending hemagglutininproducing species, suggest presence lectins specific high mannose N-glycans, complex or O-glycans. algal stable wide range temperature, independent cations. Therefore, Vietnamese may promise as valuable source new application.