The following points highlight the top three properties of carbohydrates in cell membrane of mammals. 1. The mammalian cell membrane contains about 5 per cent carbohydrates present in glycoproteins and glycolipids. 2. Glycophorin, the major integral membrane glycoprotein of human erythrocytes, consists of 130 amino acid residues and spans the lipid membrane having free polypeptide proteins outside both the external [...]
The following points highlight the two main divisions of mucosubstances. The divisions are: 1. Glycoprotein 2. Mucopolysaccharides. Mucosubstances: Division # 1. Glycoprotein: (i) They are protein-polysaccharide compounds occurring in the tissues, particularly in mucus secretions. (ii) They do not contain uronic acids although they contain acetyl hexosamines such as N-acetyl glucosamine and N-acetylgalactosamine. Hexoses such as mannose or galactose are [...]
The following points highlight the top five classifications of isomerism. The classifications are: 1. D and L 2. α- and β-anomers 3. Epimers 4. Pyranose and Furanose Ring Structures 5. Aldose-ketose Isomerism. Isomerism: Classification # 1. D and L: The designation of an isomer as D- or L- form is determined by its spatial configuration to the parent compound. When [...]