Category: Biochemistry 12
Biological Roles Of Lipid Lipids have the common property of being relatively insoluble in water and soluble in nonpolar solvents such as ether and chloroform. They are important dietary …
Fatty Acids A fatty acid is a molecule characterized by the presence of a carboxyl group attached to a long hydrocarbon chain. Therefore these are molecules with a formula …
Lipids Introduction The lipids are a heterogeneous group of compounds, including fats, oils, steroids, waxes, and related compounds, which are related more by their physical than by their chemical …
Urea Cycle Urea is the major end product of nitrogen catabolism in humans. Urea synthesis is a cyclic process. Synthesis of 1 mol of urea requires 3 mol of …
Deamination While ammonia, derived mainly from the a-amino nitrogen of amino acids, is highly toxic, tissues convert ammonia to the amide nitrogen of nontoxic glutamine. Subsequent deamination of glutamine …
Transamination (Importance Of Transaminases) The first step in the catabolism of most L-amino acids, once they have reached the liver, is removal of the a-amino groups, promoted by enzymes …
Specialized Products of Amino Acids Phenylalanine, Tyrosine Phenylalanine Phenylalanine is first converted to tyrosine. Hyperphenylalaninemias arise from defects in phenylalanine hydroxylase itself (type I, classic phenylketonuria or PKU), in …
Digestion And Absorption Of Proteins Several groups of enzymes catalyze the digestion of proteins. There are two main classes of proteolytic digestive enzymes (proteases), with different specificities for the …
