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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Chem Educ. 2011 Jan 1;88(1):95–97. doi: 10.1021/ed900054b

Figure 1.

Figure 1

The most common sialic acid found on human cells is N-acetylneuraminic acid, which is shown with an α2–3 linkage to a β-galactosyl residue. This linkage is hydrolyzed by the enzyme neuraminidase to liberate the N-acetylneuraminic acid. Note the axial and equatorial hydrogen atoms in the top structure.