Biochemistry

.... aJ h - c - nh 2 .. .. I HO-C-H I H-C-OH ..... Г H — C — OH I ....... CH 2 OH (acyclic form) D-glucosamine I HO-C-H I H-C-OH I CH 2 OH н (acyclic form) (cyclic form) D- galactosamine Aminosugars are part of mucopolysaccharides of various origins, they are also carbohydrate components of various glycoproteins and glycolipids. By the number of atoms in the chain of monosaccharides they distinguish: bioses, trioses, tetroses, pentoses, hexoses, etc. Trioses, pentoses, and hexoses are of the greatest importance in the human and animal organism In the metabolism of carbohydrates in the tissues involved two triose (glyceryl new aldehyde and dihydroxyacetone). Their general formula is C 3 H 6 O 3 . Trioses are formed in the body in the form of phosphoric esters in the reactions of glycolysis, alcohol fermentation, as well as from glycerol that is part of lipids. 139