Role of sugar in biological recognition blood group substances
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Biological roles of blood group antigens. ... Blood group antigens are markers on surface-exposed red cell proteins or the sugar moiety of glycoproteins or glycolipids. Apart from their presumed biological function, some antigens have been identified as receptors for host/parasite interactions.
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Sugar has an important role in identifying the blood group of a person. The antigens which are found on the surface of the red blood cells are used to name the blood groups. These anitgens are the simple chain of sugar.
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The types of 'oligosaccharides' present on the red blood cell's surface determines the blood type of a person. If only the O-type antigen is present then the blood type is O. Similarly if only A or B anitgens are found then the blood is of type A or type B. If both 'A' and 'B' antigen are present then the blood group is AB
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