59957-92-5

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[1][2].

[1] Feizi T, et al. The adhesive specificity of the soluble human lectin, IgE-binding protein, toward lipid-linked oligosaccharides. Presence of the blood group A, B, B-like, and H monosaccharides confers a binding activity to tetrasaccharide (lacto-N-tetraose and lacto-N-neotetraose) backbones. Biochemistry. 1994 May 24;33(20):6342-9. DOI:10.1021/bi00186a038
[2] Sabharwal H, et al. Blood group specific oligosaccharides from faeces of a blood group A breast-fed infant. Mol Immunol. 1984 Nov;21(11):1105-12. DOI:10.1016/0161-5890(84)90121-4