- TigerLv 51 decade agoFavorite Answer
As a class, the nucleotides or nucleic acids may be considered one of the most important metabolites of the cell. Nucleotides are found primarily as the monomeric units comprising the major nucleic acids of the cell, RNA and DNA. However, they also are required for numerous other important functions within the cell. These functions include: 1. serving as energy stores for future use in phosphate transfer reactions. These reactions are predominantly carried out by ATP. 2. forming a portion of several important coenzymes such as NAD+, NADP+, FAD and coenzyme A. 3. serving as mediators of numerous important cellular processes such as second messengers in signal transduction events. The predominant second messenger is cyclic-AMP (cAMP), a cyclic derivative of AMP formed from ATP. ATP (adenosine triphosphate) is a nucleotide that is used in energetic reactions for temporary energy storage.Energy is stored in the phosphate bonds of ATP. When the bonds are broken, the energy is released. Normally, cells use the energy stored in ATP by breaking one of the phosphate bonds, producing ADP. Energy is required to convert ADP + Pi back to ATP.
4. controlling numerous enzymatic reactions through allosteric effects on enzyme activity. 5. serving as activated intermediates in numerous biosynthetic reactions. These activated intermediates include S-adenosylmethionine (S-AdoMet) involved in methyl transfer reactions as well as the many sugar coupled nucleotides involved in glycogen and glycoprotein synthesis.Source(s): from Tiger & google.com
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