Blood Group Saccharides

Lewis X trisaccharide (Lewis X, Le^x) is a potent T_H2 regulator, antagonizes LPS-induced IL-12 immune expression. Lewis X trisaccharide is a human histo-blood group antigen, plays an key role in cell-cell adhesion, and servers as a tumor marker. Lewis X trisaccharide is highly expressed in the outer membrane of the parasite, can be used for the immunology research of schistosomiasis.

Blood group A pentasaccharide (A-Pentasaccharide), an oligosaccharide in urine, can inhibit the binding of anti-A antibody to blood group A substance.

Blood group A antigen tetraose type 5 (A-Tetrasaccharide) is a tetrasaccharide and a blood group specific oligosaccharide, inhibits the binding of anti-A antibody to blood group A substance. Blood group A antigen tetraose type 5 can be isolated from polar bear milk samples.

Blood-group A trisaccharide (A-Trisaccharide) is a oligosaccharide present in the urine of blood group A secretors.

Blood group H carbohydrate is a carbohydrate containing two monosaccharides, fucose and galactose, linked by α1-2 glycosidic bonds. It is the precursor of ABO blood group antigens, which are present on the surface of red blood cells and play a role in immune recognition and transfusion compatibility. Type H disaccharides have diverse applications in biochemical research, especially in the study of carbohydrate-protein interactions and the biosynthesis of blood group antigens. In addition, it can be used as a diagnostic tool to identify ABO blood group phenotypes.