GO:0033691

Interacting selectively and non-covalently with sialic acid, any of a variety of N- or O- substituted derivatives of neuraminic acid, a nine carbon monosaccharide. Sialic acids often occur in polysaccharides, glycoproteins, and glycolipids in animals and bacteria. [CHEBI:26667, GOC:add, http://www.biology-online.org, ISBN:0721601465]