I just read that "Numerous biomolecules exhibit the ability to dissolve certain metal cations. Thus, proteins, polysaccharides, and polynucleic acids are excellent polydentate ligands for many metal ions." (Wikipedia, subject chelation)
Does that mean that something like hyaluronic acid for example, being a polysaccharide, has chelating properties?
I'm not a chemist and understand that the matter is too broad and complex to simplify and perhaps not at all useful, but I just wondered?