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 top three classifications of carbohydrates. The classifications are: 1. Monosaccharides 2. Disaccharides 3. Polysaccharides. Carbohydrates: Classification # 1. Monosaccharides: Trioses and Tetroses: Phosphates of the two trioses, glyceraldehyde and dihydroxyacetone, are formed from fructose-1, 6- diphosphate by glycolysis. 3-phosphoglyceraldehyde and erythrose-4- phosphate are formed by the hexose monophosphate shunt. Pentoses: Ribose and Deoxyribose are important [...]
The following points highlight the two main pathways in intermeniary metabolism of carbohydrates. Pathway # 1. Gluconeogenesis: In this process glucose is formed from non-carbohydrate precursors. Thus, citric acid cycle and glycolysis are the main pathways of gluconeogenesis. The substrates can be some amino acids, (e.g., proline) lactic acid, glycerol, etc. Gluconeogenesis from amino acids and some organic acids is [...]