How can you get N-acetylglucosamine?

What are Large molecules made of carbon and hydrogen atoms?

Proteins are the large molecules that are made up of Carbon, Hydrogen, Oxygen and sulphur. Carbon, Hydrogen and oxygen are chiefly present in all the biomolecules. But the proteins contain sulphur as their one of the components, as DNA have Phosphorus as one of their important component. Two amino acids, Methionine and Cysteine, contain sulphur in their side chain. When these amino acids are incorporated in the proteins, sulphur is added to the proteins. Sulphur present in cysteine, as a thiol group, play a crucial role in the stability of the proteins as they form disulphide bonds. Apart from that, two polysaccharides also contain sulphur. Chondroitin -4- Sulphate is a polymer of repeating unit of Glucuronic acid and NAcetylGalactosamine that is sulphated at the fourth carbon. The other polysaccharide is Kertan Sulphate. It has repeating units of Galactose and NAcetylGlucosamine sulphated at 6th carbon.